How about some love for Pathfinder? What about making a spell happen whenever you want?
Reaction Spell (Metamagic)
You prepare a spell to go off whenever you want.
Benefit: You prepare a spell to go off exactly when you want it. Any time you could use a free action, you may cast the spell you prepared as a reaction spell.
This feat can not be applied to any spell with a casting time of a turn.
Level Increase: +4 (a reaction spell uses up a spell slot four levels higher than the spell’s actual level.)