Benefits: This is a skill feat that scales with your ranks in Concentration. * 0 ranks: You gain +3 to your Concentration checks. * 4 ranks: You can take 10 on Concentration checks and caster level checks. * 9 ranks: You may maintain concentration on a spell as a move action (DC 25 + spell level). If you beat the DC by 10 or more, you can maintain concentration as a swift action. If you fail your check, you lose concentration. * 14 ranks: If you would be nauseated, you're sickened instead. * 19 ranks: You can maintain concentration as a free action instead of a swift action.