I could've sworn that there's a feat that allows a spell's caster to heal hp damage whenever the caster deals damage with a spell. For example, a caster casts magic missile at a foe and the caster regains some hp if the foe is dealt damage by the spell.
Is there a feat that has an effect like this? Alternatively, if there isn't a feat that does this, is there something else that does do this like a magic item or a special ability granted by a base class, prestige class, or template?