No offense, but if you let players use the Fist of Raziel as described BoED you're crazy. IMO the Fist of Raziel should only get +1 spellcasting level every two class levels. That or +1 level of paladin only.
There are three exalted feats. One's only for arcane spellcasters (Blessed of the seven sisters), but the others don't have such restrictions (one of the others is more or less bound to a deity, though - Lliira's Blessing, though you don't have to have her as your Patron Deity).