Last Updated: May 25, 2026
The best skill in Sword X Staff is Lion Combo (S Tier - highest single-target DPS in the game), the best pet is Zeioletus (S Tier — best all-around pet combining AoE damage and reliable combo support), and the best relic is Everburn Throne (S Tier - direct +58 ATK boost, effective across all classes from early to endgame). This tier list covers every skill, pet, and relic ranked by damage output, ability power, synergy, and long-term scaling.
Sword X Staff is an idle game where you can explore a mystical world, unlock legendary skills, get rare pets, and even collect mythical relics. With over 200 unique skills, pets, relics, and equipment combinations, choosing the wrong options for your build can significantly slow down progression. So, to help you out, this complete tier list covers the top skills, pets, and relics.
Sword X Staff Class Tier List
Sword X Staff uses a dual-class system with two base classes — Mage and Warrior — each branching into two advanced specializations once your Total Level and Class Level reach the required thresholds. The strongest class for most players depends on whether you are spending money on the gacha. Here are the best classes in Sword X Staff for free-to-play and paid players separately:
Free-to-Play Class Tier List
Without spending on the gacha, your class choice comes down to which advanced specialization delivers the best results from base stats alone. Duelist is that class — its multi-hit combo mechanic and crit scaling work at any gear level, making it the strongest pick before rare drops enter the picture. Knight is the safer second choice, with enough defensive bulk to carry solo PvE without requiring specific gear to stay alive.
| Tier | Class | Why This Tier |
|---|---|---|
| S | Duelist | The strongest F2P class. Duelist's combo and crit identity delivers top single-target burst and boss damage without relying on rare drops or premium gear to function. |
| A | Knight | Consistent tank survivability that carries solo PvE reliably. Not as explosive as Duelist, but far more forgiving to play without premium investment. |
| B | Sorcerer | Strong AoE damage and fast stage clearing, but the damage ceiling depends heavily on rare relics that are difficult to obtain without spending, which limits F2P value. |
| C | Sage, Mage, Warrior | Sage scales hard with Erosion stacks and premium prayers — genuinely weak solo without that investment. Mage and Warrior are starter classes replaced by their advanced forms. |
Paid Class Tier List
Heavy gacha investment changes the ranking entirely. Sage has the highest ceiling of any class in the game once you stack its debuff mechanics with premium prayer pulls — it converts what looks like a support kit into burst damage that no other class can match at peak investment. Sorcerer is the other big winner here, since its elemental multipliers scale harder than flat-damage classes when rare relics are in the mix.
| Tier | Class | Why This Tier |
|---|---|---|
| S | Sage | Scales hardest with investment. Erosion stacks and high-end prayers turn Sage's support kit into burst windows that outpace any Duelist combo at high investment levels. |
| A | Sorcerer, Duelist | Sorcerer climbs because its elemental damage modifiers scale disproportionately with rare relics. Duelist remains excellent but loses its F2P dominance as Sage pulls ahead. |
| B | Knight | Raw defense gains flatten out as the DPS classes pull further ahead with premium gear, making Knight progressively less impactful the more you invest. |
| C | Mage, Warrior | Starter classes with no advanced specialization benefits. Always upgrade to Sorcerer/Sage or Duelist/Knight as soon as thresholds are met. |
What Is the Class System in Sword X Staff?
Before getting into the skills, you should know about the classes in Sword X Staff, which is based on a dual-class system, namely the Mage and Warrior classes. The classes branch into advanced specializations as your Total Level and Class Level increase. For most players prioritizing DPS, the Sorcerer and Duelist are the strongest choices in the current meta. Here are all the ones you should know about:
| Base Class | Advanced Class | Role | Best For |
|---|---|---|---|
| Mage | Sorcerer | Offensive/DPS Mage | Burst magic damage and fast stage clearing |
| Mage | Sage | Support/Buff Mage | Dungeon runs and sustained team-based combat |
| Warrior | Duelist | Burst/DPS Fighter | Boss fights and high-damage close-range combat |
| Warrior | Knight | Tank/Defensive Fighter | Survivability and consistent DPS in dungeons |
What Do the Skill Tier Rankings Mean in Our Tier List?
In Sword X Staff, the skill rankings are based on each skill's damage output, AoE coverage, CD, and how much value it adds to your loadout. Here are each of the tiers and what they mean in Sword X Staff.
| Tier | Meaning | Skills |
|---|---|---|
| S | Meta-defining. Legendary skills with top-tier damage, strong scaling, and utility that remain effective from the early game through endgame content. | 6 |
| A | Excellent. Epic skills with solid damage or situational value that complement S Tier loadouts well in most content types. | 5 |
| B | Solid. Useful in specific scenarios such as dungeons or boss fights, but limited in value for general progression. | 3 |
| C | Below average. Provides minimal progression value with significant drawbacks and should be replaced as soon as a better option is available. | 2 |
Sword X Staff Tier List - All Skills Ranked
⇓ META SKILLS ⇓
Blazing Fire Ring
Water Assault
Wind's Delight
Whirlwind Slash
Lion Combo
Heavy Impact
⇓ VERY GOOD SKILLS ⇓
Cyclone
Fireball
Tempest Sphere
Wind Blade Slash
Quadrant Slash
⇓ DECENT SKILLS ⇓
Healing Touch
Stonechief Summon
Boiling Bloodlust
⇓ MID SKILLS ⇓
Void Blessing
Luminous Shield
Which Skills Are S Tier in Sword X Staff?
| Skill & Rarity | Why This Tier | Best For |
|---|---|---|
 Heavy Impact [Legendary] | + Heavy Impact deals high physical damage to the enemy directly in front of the caster and launches them airborne to open combo windows for follow-up skills. + Its built-in priority targeting for large enemies amplifies damage specifically against bosses, making Heavy Impact the top burst skill for high-HP single-target encounters. | Boss fights, Combo setups |
 Lion Combo [Legendary] | + Lion Combo is the highest single-target damage skill in the game, striking the enemy in front of the caster up to three times with physical hits that scale with each successive strike. + It comes with a stacking damage multiplier, making Lion Combo the strongest burst option in any build. | Boss fights, Single-target DPS |
 Whirlwind Slash [Legendary] | + Whirlwind Slash deals heavy physical damage to all enemies within a 1-grid radius, capping at four simultaneous hits for reliable sustained AoE output. + With proper upgrades, Whirlwind Slash scales in DMG, making it one of the most consistently valuable melee skills. | AoE DPS, Late-game |
 Water Assault [Legendary] | + Water Assault deals AoE damage to all enemies in front of the caster. It stacks additional damage multipliers each time the same target is hit consecutively. + Its damage amplifier also increases against multiple simultaneous targets, giving Water Assault outstanding value in both AoE and single-target fights. | Boss fights, AoE DPS, All Modes |
 Blazing Fire Ring [Legendary] | + Blazing Fire Ring hits all nearby enemies with massive fire damage, making it the strongest Mage option when surrounded by multiple opponents. + Its upgrade scaling amplifies damage significantly over time, making Blazing Fire Ring one of the best long-term Mage skills. | AoE DPS, Fire Core Build, Late-game |
 Wind's Delight [Legendary] | + Wind's Delight summons wind blades that continuously deal damage across a 6-grid radius, providing the widest area coverage of any skill in the game. + Its ability to sustain DPS over long periods and clear through enemy groups makes Wind's Delight one of the most efficient skills to use. | AoE, Wind Core Build |
Which Skills Are A Tier in Sword X Staff?
| Skill & Rarity | Why This Tier | Best For |
|---|---|---|
 Wind Blade Slash [Epic] | + Wind Blade Slash deals heavy wind damage to all enemies directly in front of the caster's grid and knocks them airborne for combo opportunities with other skills. - However, Wind Blade Slash lacks broader AoE coverage, which limits its overall damage and effectiveness in situations where enemies are spread out. | Combo Setup, Wind Core Build |
 Quadrant Slash [Epic] | + Quadrant Slash deals heavy physical damage to all nearby enemies and is especially effective in close-combat scenarios where its multi-hit mechanic triggers against tightly grouped opponents. - However, Quadrant Slash struggles significantly when enemies kite from range. | AoE DPS, Melee Build |
 Tempest Sphere [Epic] | + Tempest Sphere deals continuous wind damage to enemies in front of the caster, providing reliable sustained pressure against multiple targets simultaneously. - However, Tempest Sphere's damage falls off noticeably when pushing into higher-difficulty stages, limiting its long-term value compared to Legendary-tier skills that maintain their impact. | Burst AoE, Mid Game, Wind Builds |
 Cyclone [Epic] | + Cyclone hits a distant enemy and all targets in a small radius with heavy AoE wind damage, and pulls enemies airborne to create combo opportunities with other skills in your loadout. - However, Cyclone requires precise timing and positioning to use effectively. Without proper setup, its grouping and combo potential are wasted entirely. | Ranged AoE, Wind Builds |
 Fireball [Epic] | + Fireball deals heavy AoE fire damage to nearby enemies and provides a repositioning mechanic useful for escaping or engaging quickly in difficult situations. - However, Fireball's repositioning is random and can sometimes place you in the middle of enemy groups, creating dangerous situations. | Early to Mid Game, Fire Builds, AoE |
Which Skills Are B Tier in Sword X Staff?
| Skill & Rarity | Why This Tier | Best For |
|---|---|---|
 Stonechief Summon [Epic] | + Stonechief Summon places a distracting unit in front of the caster that scales from the caster's stats and deals chip damage to nearby enemies. - However, Stonechief Summon requires a strong underlying build to function. Without proper stats, the summoned unit contributes negligible damage in the late game. | Early to Mid Game, Dungeons |
 Healing Touch [Epic] | + Healing Touch heals a nearby ally and removes enemy-inflicted debuffs from them, providing genuine survivability value in dungeon runs where teammates are present. - However, Healing Touch loses almost all effectiveness outside dungeons, making it a highly situational skill that is rarely worth a loadout slot. | Dungeons Only |
 Boiling Bloodlust [Epic] | + Boiling Bloodlust significantly increases the caster's crit rate, which provides value specifically in boss fights and dungeon runs where crits are triggered against single targets. - However, Boiling Bloodlust loses effectiveness in normal progression against large enemy groups, where the crit rate boost is low in comparison. | Boss fights, Dungeons |
Which Skills Are C Tier in Sword X Staff?
| Skill & Rarity | Why This Tier | Best For |
|---|---|---|
 Luminous Shield [Epic] | + Luminous Shield increases the caster's block efficiency by a decent amount, offering some mid-game utility against single attackers. - However, Luminous Shield is countered when facing multiple simultaneous enemies, provides zero offensive value, and contributes nothing meaningful to long-term progression. | Mid-game only |
 Void Blessing [Legendary] | + Void Blessing creates a healing grid around the caster that restores HP for all allies inside it, provides value in team fights, and dungeon runs. - However, Void Blessing is entirely useless in solo progression. This is a limitation since most modes are solo and provide zero combat value. | Team dungeons only |
Sword X Staff Tier List - All Pets Ranked
⇓ META PETS ⇓
Armopi
Zeioletus
⇓ VERY GOOD PETS ⇓
Kels
Sylvaerie
Terragon
⇓ DECENT PETS ⇓
Herbote
What Do the Tier Rankings Mean in Our Sword X Staff Pets Tier List?
The pet rankings below reflect each pet's contribution to your loadout through direct damage, defensive buffs, enemy debuffs, and how reliably those bonuses activate during combat. Here are each of the tiers and what they mean in Sword X Staff.
| Tier | Meaning | Pets |
|---|---|---|
| S | Meta-defining. Legendary pets that provide consistent damage, support, or survivability buffs that strengthen any loadout at all stages. | 2 |
| A | Excellent. Strong debuff or buff value that complements most builds well, though slightly behind S Tier in direct combat impact. | 3 |
| B | Below average. Niche buffs with RNG-dependent skills have less reliability and progression value. | 1 |
Which Pets Are S Tier in Sword X Staff?
| Pet & Rarity | Why This Tier | Best For |
|---|---|---|
 Zeioletus [Legendary] | + Zeioletus deals heavy AoE damage with Aura Shot to enemies in front and consistently knocks enemies airborne with its Lotus Step passive, creating reliable combo opportunities across all encounters. + This combination of damage and CC support makes Zeioletus the best all-around pet for progression, covering both offensive and team-support buffs simultaneously. | All content, Combo Setups, Mage Builds |
 Armopi [Legendary] | + Armopi increases the owner's defensive stats through Armor Protection and grants passive shields that absorb incoming damage when fighting enemies above your combat power. + These shields last for a long duration, providing consistent survivability advantages that make Armopi the top defensive pet for late-game encounters where raw stats are not enough. | All content, Late Game, Warrior Builds |
Which Pets Are A Tier in Sword X Staff?
| Pet & Rarity | Why This Tier | Best For |
|---|---|---|
 Kels [Legendary] | + Kels dispels enemy buffs after every damage-dealing ability and reduces enemy defense by a significant amount, enabling faster stage clears by stripping enemy combat advantages. - However, Kels lacks the direct damage output and stronger support of S Tier pets, making it a good support choice but not the primary pick. | Support Builds, Mages |
 Terragon [Legendary] | + Terragon weakens all enemies at the start of every turn and reduces their damage output throughout fights. - However, Terragon's individual damage contribution is low, meaning it functions best as a debuff-focused support pet rather than a standalone offensive one. | Support Builds, Warriors |
 Sylvaerie [Legendary] | + Sylvaerie buffs the owner's attack damage for improved stage-clearing output and uses Slow Wind Shot to delay enemy actions significantly. - However, Sylvaerie loses effectiveness when facing multiple groups of enemies simultaneously, limiting its value in fights where AoE impact is more important. | Boss Fights, Burst Builds |
Which Pets Are B Tier in Sword X Staff?
| Pet & Rarity | Why This Tier | Best For |
|---|---|---|
 Herbote [Legendary] | + Herbote continuously heals the owner with Emergency Aid whenever HP drops below 80% and has a chance to remove enemy-inflicted debuffs from the owner. - However, Herbote's abilities are heavily RNG-dependent and have niche usage cases, making it significantly less reliable and impactful than every other Legendary pet in the roster. | Support Builds, Warriors |
What Do the Tier Rankings Mean in Our Sword X Staff Relics Tier List?
The relic rankings are based on how much each relic contributes to your overall combat power through direct stat bonuses, scaling mechanics, and synergy with aggressive or defensive loadouts. Here are each of the tiers and what they mean in Sword X Staff.
| Tier | Meaning | Relics |
|---|---|---|
| S | Meta-defining. Provides direct, high-value stat increases with strong DPS loadout synergy that scales reliably from the early game through the endgame. | 3 |
| A | Excellent. Strong conditional stat boosts with meaningful impact, though requiring specific build investment to reach maximum value. | 4 |
| B | Solid. Useful defensive bonuses for early-to-mid game, but lacks the offensive stats or scaling for late-game loadout optimization. | 2 |
| C | Below average. Inconsistent buffs with no offensive value or meaningful late-game scaling. Try to replace immediately. | 1 |
Sword X Staff Tier List - All Relics Ranked
⇓ META RELICS ⇓
Everburn Throne
Prime Dynamo
Pinnacle Radiance
⇓ VERY GOOD RELICS ⇓
Doomsday Chronometer
Ignis Oculus
Sandfall Sarcophagus
Scales of Order
⇓ DECENT RELICS ⇓
Clockwork Arcanum
Eternal Gale Wheel
⇓ MID RELICS ⇓
Genesis Dew
Which Relics Are S Tier in Sword X Staff?
| Relic | Effect | Why This Tier | Best For |
|---|---|---|---|
 Everburn Throne [Mythic] | ATK +58 | + Everburn Throne provides a direct +58 ATK boost that increases overall DPS immediately upon equipping with no additional investment or conditions required. + Its strong synergy with high DPS loadouts and reliable flat ATK scaling across both early and late-game makes Everburn Throne the most impactful offensive relic available. | All DPS builds, All Modes, All Classes |
 Pinnacle Radiance [Mythic] | Crit DMG +7.5% | + Pinnacle Radiance provides a massive Crit Damage increase that dramatically amplifies burst damage output in boss fights. + It scales exceptionally well into late-game content where boss HP pools need maximum burst DPS, making Pinnacle Radiance the top relic for any crit-focused build. | Crit builds, Boss Fights, All Classes |
 Prime Dynamo [Mythic] | ATK +10 per 2 Boots dismantled (max ATK +60) | + Prime Dynamo provides the highest potential ATK increase of any relic once fully stacked through regular equipment dismantling, reaching +60 ATK at maximum effect. + Its strong synergy with crit-based loadouts and high value for frequent farmers make Prime Dynamo the best offensive relic. | All DPS builds, All Modes, All Classes |
Which Relics Are A Tier in Sword X Staff?
| Relic | Effect | Why This Tier | Best For |
|---|---|---|---|
 Doomsday Chronometer [Mythic] | SPD +8 per WP Enhancement (max SPD +48) | + Doomsday Chronometer provides a massive Speed boost that improves attack frequency and skill usage rate significantly for fast-paced, rotation-heavy builds. - However, Doomsday Chronometer requires heavy weapon enhancement investment to get its maximum value, making it far less impactful in comparison to S tier relics. | Low CD Rotation Build, All Classes |
 Scales of Order [Mythic] | HP +106 per Skill Level (max HP +318) | + Scales of Order delivers a very large HP increase that greatly improves survivability for tank and sustain-focused builds looking to outlast difficult encounters. - However, Scales of Order relies entirely on skill quality upgrades to reach full potential, meaning lower-quality skills receive significantly reduced value. | Tank Builds, Warriors |
 Ignis Oculus [Mythic] | DEF +12.5% | + Ignis Oculus provides a strong percentage-based defensive stat increase that improves survivability in difficult fights and supports frontline Knight and tank-oriented builds effectively. - However, Ignis Oculus provides no offensive stats whatsoever, making it a liability in DPS-focused loadouts where dealing damage is more important. | Tank Builds, Warriors |
 Sandfall Sarcophagus [Mythic] | DEF +10 per helmet enhancement (max DEF +60) | + Sandfall Sarcophagus provides strong defensive scaling at high helmet enhancement levels, making it well-suited for Tank setups. - However, Sandfall Sarcophagus provides almost no offensive buffs in return, making it a poor choice if you want to prioritize DPS. | Tank Builds, Warriors |
Which Relics Are B Tier in Sword X Staff?
| Relic | Effect | Why This Tier | Best For |
|---|---|---|---|
 Clockwork Arcanum [Mythic] | HP +12.5% | + Clockwork Arcanum provides a percentage-based HP increase that improves overall survivability in early and mid-game, where raw HP pools matter more. - However, Clockwork Arcanum lacks any offensive stats or meaningful late-game effects, making it a placeholder relic that you can replace with higher-tier options. | Early to Mid Game, All Classes |
 Eternal Gale Wheel [Mythic] | DEF +10.5% | + Eternal Gale Wheel provides a flat defensive boost that reduces incoming damage and has some value for defensive builds. - However, its pure defensive focus and complete lack of offensive value make it significantly less impactful than DPS-focused relics, and it falls behind Ignis Oculus in stats at the same defensive role. | Tank Builds, Warriors |
Which Relics Are C Tier in Sword X Staff?
| Relic | Effect | Why This Tier | Best For |
|---|---|---|---|
 Genesis Dew [Mythic] | Block Rate +5% | + Genesis Dew increases Block Rate by 5%, which can reduce incoming damage through successful blocks in early-game scenarios against single attackers. - However, Genesis Dew's Block Rate bonus is inconsistent and unreliable compared to direct defensive stat increases from higher-tier relics and provides no offensive bonuses of any kind, making it the least useful relic. | Early Game only |
What Is the Best Build in Sword X Staff?
Based on the skill, pet, and relic rankings above, these are the best builds in Sword X Staff for each playstyle. Each build is structured around the highest-rated options in its category, with alternatives listed when a primary pick requires significant investment to reach its full value.
Best Mage DPS Build (Wind Core)
- Class: Mage → Sorcerer
- Best For: AoE stage clearing, sustained DPS, late-game progression
| Slot | Pick | Tier | Why |
|---|---|---|---|
| Skill 1 | Wind's Delight | S | Widest AoE coverage in the game at 6-grid radius, sustained DPS across enemy groups |
| Skill 2 | Wind Blade Slash | A | Knocks enemies airborne, opening combo windows for Wind's Delight follow-up damage |
| Skill 3 | Cyclone | A | Ranged AoE wind damage that pulls enemies airborne, extending combo chain further |
| Pet | Zeioletus | S | Adds AoE damage and reliable airborne CC via Lotus Step passive, directly extending the combo chain this build relies on |
| Relic | Everburn Throne | S | Flat +58 ATK with no conditions, immediately increases DPS output across all three wind skills |
| Relic (Alt) | Prime Dynamo | S | Reaches +60 ATK at max stacks through equipment dismantling, slightly edges out Everburn Throne for active farmers |
Best Mage DPS Build (Fire Core)
- Class: Mage → Sorcerer
- Best For: Burst AoE damage, early-to-mid game fire build progression
| Slot | Pick | Tier | Why |
|---|---|---|---|
| Skill 1 | Blazing Fire Ring | S | Strongest Mage AoE option when surrounded by multiple enemies, scales heavily with upgrades |
| Skill 2 | Water Assault | S | Stacks damage multipliers on consecutive hits and scales further against multiple targets simultaneously, covering both AoE and single-target gaps |
| Skill 3 | Fireball | A | AoE fire damage with a repositioning mechanic that keeps this build mobile in difficult encounters |
| Pet | Kels | A | Dispels enemy buffs after every damage-dealing ability and reduces enemy defense, amplifying the burst damage from Blazing Fire Ring and Water Assault |
| Relic | Pinnacle Radiance | S | +7.5% Crit DMG dramatically amplifies burst output from Blazing Fire Ring's upgrade-scaled damage |
| Relic (Alt) | Everburn Throne | S | Flat +58 ATK with no conditions if you are not running a crit-focused setup |
Best Warrior Burst Build
- Class: Warrior → Duelist
- Best For: Boss fights, single-target DPS, high-damage close-range combat
| Slot | Pick | Tier | Why |
|---|---|---|---|
| Skill 1 | Lion Combo | S | Highest single-target damage skill in the game with a stacking damage multiplier across three successive hits |
| Skill 2 | Heavy Impact | S | Launches the target airborne to open a combo window for Lion Combo follow-up, with priority targeting against large enemies amplifying boss damage specifically |
| Skill 3 | Boiling Bloodlust | B | Significantly increases crit rate, which directly multiplies Lion Combo's stacking damage output in boss fights and dungeons where this build is focused |
| Pet | Sylvaerie | A | Buffs owner's attack damage and delays enemy actions with Slow Wind Shot, directly supporting the burst window this build creates with Heavy Impact |
| Relic | Pinnacle Radiance | S | +7.5% Crit DMG pairs directly with Boiling Bloodlust's crit rate increase, maximizing burst on Lion Combo's stacking multiplier |
| Relic (Alt) | Prime Dynamo | S | Up to +60 ATK at max stacks for active farmers who regularly dismantle equipment |
Best Warrior Tank Build
- Class: Warrior → Knight
- Best For: Dungeons, survivability, consistent DPS in sustained encounters
| Slot | Pick | Tier | Why |
|---|---|---|---|
| Skill 1 | Whirlwind Slash | S | Heavy physical damage to all enemies within a 1-grid radius, capping at four simultaneous hits for reliable sustained AoE output that scales with upgrades |
| Skill 2 | Quadrant Slash | A | Multi-hit AoE that complements Whirlwind Slash in close-combat scenarios where enemies are grouped tightly around the Knight |
| Skill 3 | Stonechief Summon | B | Places a distracting unit in front of the caster that scales from your stats, adding chip damage and drawing enemy aggression away from the Knight in dungeon runs |
| Pet | Armopi | S | Top defensive pet: increases defensive stats through Armor Protection and applies passive damage-absorbing shields when fighting enemies above your combat power |
| Relic | Scales of Order | A | Up to +318 HP scaling with skill level, the largest survivability gain available and ideal for a Knight running upgraded skills |
| Relic (Alt) | Ignis Oculus | A | +12.5% DEF with no investment conditions, better than Scales of Order if your skills are not yet at high quality levels |
Frequently Asked Questions (FAQs)
Advanced classes unlock by increasing both your Total Level and Class Level. Once your base Mage or Warrior class reaches the required thresholds, the stronger specializations like Sorcerer, Sage, Duelist, and Knight become available to choose from.
For free-to-play players, Warrior is the stronger starter class because it evolves into Duelist, which is the top F2P advanced class. Duelist delivers the best single-target burst without needing rare gear. If you plan to spend on the gacha, Mage is viable since it evolves into Sage, which scales hardest with premium investment.
Yes. Sword X Staff has a class transfer system that unlocks at level 100, accessible through the Class option in your character screen — the same place you equip and upgrade skills. Most sources indicate skill investment converts to the new class rather than resetting, though whether the transfer is fully lossless from level 100 or only later in progression should be verified in-game before committing to a switch. The recommendation is to anchor one class first, complete the second class change, and only switch once you have a clear endgame target such as Sage or Duelist.
Skills are obtained through the Prayer system, which is the game's gacha pull mechanic. You spend Stellatie to pull from the Prayer Statue, which becomes available after completing the tutorial and reaching level 3. Each pull gives you a skill for your chosen class, with rarity ranging from Rare to Epic to Legendary. Legendary skills are the rarest and make up the entire S Tier.
The strongest F2P build is Warrior (Duelist) with Lion Combo, Heavy Impact, and Boiling Bloodlust as your skill loadout, Sylvaerie as your pet, and Pinnacle Radiance as your relic. This build combines the highest single-target DPS in the game with a crit amplifier and does not require rare drops or premium gear to function at a high level.
For more on Sword X Staff, check out Sword X Staff Codes, here on PGG.
