Combat Casting, Improved (Feat)

"Am I supposed to be worried?"

Prerequisites: Caster Level 21, Combat Casting (Feat)

Benefit: Once per round, you can take 20 on any concentration check to cast a spell, including a combat casting check. Furthermore, you may take 10 on concentration checks to cast spells any time you wish, even when threatened, unless you are doing something which specifically prohibits concentration (such as Rage).