In most teams, you'll be the primary healer. That's why teams get Adventurers, their healing. That said, make sure you know how to heal, when to heal, as well as have the best heals you can use.

That's not to say that we can't do damage too. In fact, we're pretty decent damage dealers. Try and keep everyone alive as well as do great damage ;) That's the Advent burden, and a fun one it can be.