Quote Originally Posted by SilvertearRen View Post
Bards from XI had time-altering spells. Arcanist has time-altering spells.

And why would we need a White Mage (Mystic) when we already have Conjurer and Thaumaturge? (White Mage/Black Mage types, respectively)
So did Time Mage, Green Mage, Blue Mage, and a dozen other magic and non-magic classes throughout the FF series. Time-alternating spells are not uncommon.

White Mage also does more than just heal stuff. They use holy magic. Mystic's spells are aligned to astral elements.