Even you are sometimes surprised by how well your spells work.
Prerequisites: Caster level 3rd, any luck feat.
Benefit: You can expend one luck reroll as a swift action to reroll the damage dealt by a spell you have just cast.
You can expend two luck rerolls as a swift action to reroll a caster level check.
You gain one luck reroll per day.
Source: Complete Scoundrel, page 79.