Needs review
Source: Shining South

Description: You can screen allies from the effects of your area spells. Any other metamagic feat.

Prerequisites:

You can modify an area spell so that it does not affect one designated creature within its area. All other creatures in the spell's area are affected normally. Selective Spell has no effect on target or effect spells. A Selective Spell uses a slot one level higher than the spell's normal level.