Spellsteal

Type class
Name Spellsteal
Class witch
Brief Gain control of absorbed spells instead of ending them
Power Absorb Magic

Class Feat

Spellsteal

When you successfully absorb a spell, you can choose to gain control of the spell instead of ending it. This only works for spells that can be controlled actively, or spells that distinguish between friend and foe; in the latter case, you become the friend, and you designate the foe.