<p>Phoenix Fire is hands down the most powerful move... Strips debuffs defensivly, buffs offensivly, adds soulfire which counts as burning for Demon set, AOE Catastrophic, so it hits everyone, and refreshes a rez. No one could ask for better than that. Choas shield changes some dots into fancy stuff, but doesn't enhance other abilities, and you get some heal, not going to cut it for even the top 3.
</p><p>I'd say PF, Assassin's Strike, and you gotta give love to Psylocke's Mental Coordination. Those were game changers, Choas sheild just slowed things down a bit.
</p>