In terms of strategy, is the Celerity spell line also in that "too good, banned by the gods" category? You'd think with Milo's propensity to ready actions, the spell that lets him defy all concepts of speed and act out of order would be something he jumps

No, they haven’t been banned by the gods, there’s just only so many dirty tricks I can work into one chain of events, and Milo’s spell selection is limited by the time he has to research.

That said, I was just looking into ways of curing and/or being immune to Daze. I feel like some kind of trick could be worked out with Contingency, or giving Mordy a magic item with some kind of healing spell, but I haven’t made any enormous breakthroughs yet.