Engravings are useful (or occasionally harmful) effects that are activated via Ability Stones and other accessories. Engraving Effects work alongside your equipment to help enable Engravings. You can begin using Engravings and Engraving Effects after completing the A Kingdom Reclaimed main story quest.
How to activate Engravings
When you obtain an Ability Stone, there will be three different Engravings on it in addition to its base stats: two positive Engravings and one negative. To activate these Engravings, you will need to go to an Ability Stone Cutter and facet the stone.
Each Engraving has five nodes. You can pay money to attempt to activate one of the nodes on each Engraving. You need a minimum of five nodes in an Engraving across all of your gear and Engraving Effects to activate the Engraving, with 10 and 15 nodes upgrading the Engraving's effects.
For every successful node you fill in while faceting an Ability Stone at the Ability Stone Cutter, the chance of success for your next node will lower. For every failure, your chance of success will rise.
You'll want to attempt the negative Engraving when the odds of success are low and the positive Engravings when odds are high to maximize your chances of getting as many positive Engraving nodes as possible.
Accessories can also have node points for Engravings, but players very likely won't obtain such accessories until they've reached at least level 50.
How to use Engraving Effects
To activate your Engraving Effects, either press Alt+I or click on Roster in the lower right, then click on Engraving Effects.
You will need to use 20 Uncommon Engraving Recipes for the specific type of Engraving Effect that you want to activate first. You can obtain these by progressing the main story and through late-game content.
Once an Engraving Effect has been unlocked through these recipes, simply right-click on it to activate it. Only two Engraving Effects can be active at once, with the second equip slot opening up at a higher level. While active, the Engraving Effects will provide extra node points to their Engravings.
You can have an Engraving Effect provide more node points by upgrading it to a higher tier through higher tier Engraving Recipe books of the same effect. Each extra tier will provide an extra three node points, up to a maximum of 12.
For more help in Lost Ark, go check out Where to find "World in My Eyes" Hidden Story in Lost Ark on Pro Game Guides!