Quote Originally Posted by IttyBitty View Post

I'd like to see them explain Holy. To explain Gravity.

They are both skills that are largely useless in solo content, since the number of enemies you need to be facing to make them mana efficient is far more than a solo healer will usually be facing. WHM you can make an edge case for because it has the stun component, making it more reliable for soloing groups of enemies. Not so much with AST.
Or assize, which switches between healing or damage, all depending on the stance you're in.