Best team for

Last Day Dawn, it's one of the hardest quests in the game. My mesmer will have Phantom Pain, Shatter Delusions, empathy, panic, mistrust, Worry, chaos storm and maybe winter. Plan to build my hero team a mm necro, a water ele and a monk, any advice on the skill builds?

Just take 2 mes with you, one for eptitude and one for panic.
Then an N/rt BiP healer and you rock

Is the titans immune to poison?