Index of Feats by Type - Metamagic, Epic

Name	Prerequisites	Benefit
Enhance Spell	Maximize Spell.	The damage cap for the character's spells increases by 10 dice (for spells that deal a number of dice of damage equal to caster level) or by 5 dice (for spells that deal a number of dice of damage equal to half caster level). An enhanced spell uses up a spell slot four levels higher than the spell's actual level. This feat has no effect on spells that don't specifically deal a number of dice of damage equal to the caster's level or half level, even if the spell's effect is largely dictated by the caster's level.
Intensify Spell	Empower Spell, Maximize Spell, Spellcraft 30 ranks, ability to cast 9th-level arcane or divine spells.	All variable, numeric effects of an intensified spell are maximized, then doubled. An intensified spell deals twice maximum damage, cures twice the maximum number of hit points, affects twice the maximum number of targets, and so forth, as appropriate. Saving throws and opposed rolls are not affected. An intensified spell uses up a spell slot seven levels higher than the spell's actual level. A character can't combine the effects of this feat with any other feat that affects the variable, numeric effects of a spell.