2 AoEs - Trauma based.
Riftwave - Minor damage, stuns those within 10m radius, dazes those outside of the 10m radius. Uncurable, about a 6s duration.
Protectors Strike - Hits roughly every 30s. High damage Trauma AoE. Basically a HP check on the raid. - Often occurs around same time as the Rift.

Strat - Start in a position. Roughly 10-15s into fight, he will cast a black circle/Rift on the floor. You will get a message saying similar to "A rift has appeared near you". You must move away from it swiftly to a distance away from the rift. Note; The rifts appearance doesn't do its radius justice, so move further than the animation for it.

30s Later, original rift disappears, a fresh one pops, move back to original spot.

There will be swarm adds that come into the fight every so often (2 pop spots, first left corner as you enter room, and the bottom of the far ramp). These are heroic based adds, which don't do much. Have an offtank pick them up and burn them.

Short Version - Burn named, Survive AoE, Joust Rifts.