MERCIFUL SPELL [Metamagic]

     Your damaging spells subdue rather than kill.

Benefit: You can alter spells that inflict damage to inflict nonlethal damage instead.  Spells that inflict damage of a particular type (such as fire) inflict nonlethal damage of that same type.

Level Increase: None (a merciful spell does not use up a higher-level spell slot than the spell’s actual level.)