Haven't been to T4 in a little while since patch, so sorry if I forget anything.

In my static, brd or a dragoon pulls the rook(s) in every phase, and I (OT WAR) pull everything else including spiders (except for the 1st dread's spiders; those we feed.) I make sure to go easy on the CDs so I have em all for Phase 6.

So Phase 6 begins, DPS pulls the rook, I pull the bug(s) first so they don't get eaten, overpower anything that's making a beeline for the healers, and proceed to kite everything and its mother until the first dreadnought is dead. If the dreads and MT are 2 o clock, then I kite from 5 o clock, all the way around the edge of the arena rotating CDs as I go, change directions at 11 o clock (perfect spot to overpower as they line up chasing you), and kite all the way back to 2 o clock. By then, or after another round of kiting, a dread should be dead, so I stop, let caster LB, holmgang if necessary, kill the last bug, then go help kill last dread.