Improved Combat Casting

Combat Casting (PH) , Concentration 25 ranks,

You get a bonus equal to 1/2 your caster level on Concentration checks made to cast a spell or use a spell-like ability while on the defensive or while you are grappling or pinned.

You get a bonus equal to 1/2 your caster level on Concentration checks made to cast a spell or use a spell-like ability while on the defensive or while you are grappling or pinned.

You heighten your ability to cast spells while threatened without fear of being attacked.