mary

Mary is a fully focused healer, note you will be down a pawns worth of damage taking on Mary, as she has no offensive spells.

however, the tradeoff for this is a pawn that will put the survival of the party above all else, with every healing spell and all three basic elemental enchantments, Mary will keep you alive, and prepared.

also she has Legion's Might, forget about protecting her, she cant die.