I voted "Druid," because, like several others have mentioned, the correct answer is "another cleric." In general, I like parties built this way: Healer, Warrior, Arcanist, Skill-user, Healer, Warrior, Warrior, Arcanist, Skill-user, H, W, A, S, H, W, A, H, W, A, H, W, A, etc. So a six-person...