Wouldn't be better to get access to a buff while on Misery that enhance potency of the next Divine spells on each hit you land with a weapon ? a sort of "TP"-like in a form of a buff like the one it does for Cura.

Example:

"Divine Acumen" , active the buff first hit you land and is augmented on each hit landed. Enhancing the Next Banish spell you land, based on Stored DA. (giving a WS attribut to the spell)
Store TP can enhance this trait.
Cap at 3000 Store Divine Acumen (sDA).
While under the effect of Divine Acumen TP generation is reduced.
Can be use only under "Afflatus Misery".