This fight has 2 phases. Phase 2 starts at 20%. You win the fight at 3%.
You only have 1 hour per week to try this boss once he is engaged for the first time. Get everything ready before you pull it.
Proper manage your defensive cooldowns. Collapsing star deaths deal tons of raid damage and it hits tank so hard.
MOVE FAR AWAY FROM EXPLOSION
EXPLOSION DEALS BIG DAMAGE
CLEAR AOE WITH CONSTELLATION
GO IN TO DODGE BIG BANG
Once you killed a Collapsing Star, it will explode and deal tons of shadow dmg to everyone. Make sure raid is topped with defensive CD. Try not to overlap it with Cosmic Smash
TAKE AGGRO AND KITE THEM
INTO BLACK HOLES
RUN INTO BLACK HOLES
TO AVOID THE BIG BANG
At 20%, Living Constellation and Collapsing Star stop spawning. Unleashed Dark Matter will join the fight. Focus on the Boss. Kill it before it enrages.