use the team that has most heals?
whatever element it may be. Dots will deal damage either way, and they are capped, so you won't die to sudden spike damage on a single target, but you get constantly a good chunck of damage. get one source of offensive dispell to get rid of the regen to shorten the fight. do not end the stun phase early, use it to recover as much as you can.

P.S andromeda if you don't have a lot of heals.