Hey folks, what do you think is the best healer build for the game? Let's say it's for core+ difficulty, considering that I'm not a fan of Sosiel's personality at all.
I don't think there's a whole lot of theorycrafting around healing specifically, tbh.
Obviously, out of non-Mercenary Companions, Daeran is clearly set up to be the best healer. There's a Mythic Ability that adds twice his CHA Modifier to the amount of HP healed when he uses his Channel Ability. His Life Mystery automatically provides some healing Spells when he reaches the appropriate level (e.g. he gets Heal at level 12). That Mystery also gives him Mass Heal as a Level 8 Spell, so he can get it a bit earlier than Sosiel. It also gives him some Abilities to boost certain healing Spells (e.g. to make casting them a Swift Action or remove level caps from "Cure" type Spells) but those boosts are nothing to write home about, specially as you keep advancing in the game.
I suppose if you want him to be a pure healbot you can give him an Animal Companion to use as a Mount (with Impossible Domain), so the Mount can tank for him, and then just keep picking the "Extra Channel" Feat to be able to freely spam it.
But I would not recommend a fully dedicated healer with no offensive capabilities, at least not after early game. It's much better to wrap up fights ASAP and deny enemies the opportunity to damage you in the first place than play catch-up and try to keep a squishy Party member alive against a barrage of arrows.
