Masks allow you to transform into the Primal. Each Mask has a defining attack ability.
Your Mask will typically be on cooldown when you jump into a match. Pick up the Primal Energy to reduce your Mask’s cooldown. Once your Mask is available to use, the Mask button in-game will light up. Tap on it to transform into a Primal.
After transforming into a Primal, there are 2 ways to return to your human form:
1. Tap the Mask button again,
2. Wait until your Primal health bar hits 0.
Each Mask has its own gear (Power and Relics) which you can customize based on your playstyle.