So a few things to remind for other Shai players attempting this boss : 1. You'll likely need the movement speed add-ons aswell. (I didn't use that as I was lazy but you probably should) Slotting +10% Movement on Eat-This will be a good idea as you'll often be separated from boss far away. 2. DPS is not top priority as a Shai but can help if you're able to peel. In 3rd Phase you're essentially a buff-machine as the Moon would pop every 5 sec denying much peeling from slow-moving melee classes like Shai. You must survive (or able to revive) in the last 10% phase's DPSing to pop your Speed + Leaf + E-Buff to ally. PA did announced changes such that the Boss would seemingly not soft-lock in 2x Shield Buff anymore but more testing is needed. 3. Your PVE I-frame is not very reliable against Prince's Leap Attack (the one where he jumps red circle at you for 3 or 6 times), Maintain Momentum and Do Not Stop Moving. I personally would aim at moving towards the middle of 'pie-shape' area initially and then Shift twice towards the top right corner of your 'pie' when the leap is about to land.