If you're wondering how to get the butterfly knife Octane Heirloom in Apex Legends then we've got all the information you're going to need! The heirloom system is being changed up a bit for the better, so you will be able to select which one you'd like to receive. If you want Octane's in particular, you will have both a longer-term and limited time option to obtain it.
Octane Heirloom Animations
If you're wondering how the butterfly knife will look when you have it equipped you can check out this video! Octane does quite a few butterfly knife tricks that you've no doubt seen on YouTube before. The knife also has a needle on it that will be used when Octane uses his speed ability.
How-to Get Octane's Heirloom
Your first option towards getting Octane's Heirloom is by unlocking all 24 System Override limited-time cosmetics. You can unlock them directly by purchasing them with Apex Coins or Crafting Metals, and/or you can get them through Event Apex Packs that will be available during the event (March 3rd-17th, 2020). If you are able to unlock all of these cosmetics, you will be given the Octane Heirloom set for free! We will have more information on how much each of these things costs once the event goes live.
If you miss out on the event or don't want to bother with collecting the cosmetics, you can get the heirloom in the more traditional fashion. This was originally accomplished by getting lucky with an Apex Pack (you were guaranteed to get it within 500 packs). Now, they have changed it up a bit. You will now be given Heirloom Shards in a pack, and once you get these you will have enough shards to pick out the Heirloom you want! There will currently be three available (if you haven't already gotten one of these): Wraith, Lifeline, Bloodhound, and Octane. Here's the official word on how this works:
We’re changing up the Heirloom system to make it easier for you to acquire the heirloom you want. Instead of an entire Heirloom set dropping at once, you’ll now receive Heirloom shards. You can then use those shards to pick the exact Heirloom set you’d like. The shards will have the same drop rate as the previous system, so that after 500 Apex Packs, you will have enough Heirloom Shards to obtain an Heirloom set from the Heirloom shop. And don’t worry, your existing progress towards the 500 Apex Packs will carry over with the switch. Remember that once a player owns all of the Heirloom sets, the player will not be eligible to receive more shards until more Heirloom Sets are added to the game.
So, you're still guaranteed to get one within 500 Apex Packs, but you will have more choice over which one you get! This part of the system is at least much better, even though getting one as a free-to-play is still pretty difficult.