Greater Spell Penetration
( Player's Handbook v.3.5, p. 94)[General]
Your spells are remarkably potent, breaking through spell resistance more readily than normal.
Prerequisite
Spell Penetration (PH) ,
Benefit
You get a +2 bonus on caster level checks (1d20 + caster level) made to overcome a creature's spell resistance. This bonus stacks with the one from Spell Penetration.