Quote Originally Posted by Kurando View Post
It looks like Despair needs the full amount of MP so not sure how it could work after all of the Fire IVs. I mean it's not like Flare where the MP currently is "All" as opposed to an actual number in this case.

Flare already (and has since 2.0) listed your current MP as its cost, unless your MP is lower than the cost of Fire I, in which case it lists the cost of Fire I and you can't cast it. This being the case, if ShB maintains the current cost design, it would replace the last Fire IV (Fire, Flare, and Fire IV have the same base cost).