Immolate the Infestation

Deal 2 damage to each creature without flying. If
a creature that was dealt damage by Immolate the
Infestation would die this turn, exile it instead.
If Immolate the Infestation was provoked, you
lose 1 life for each creature exiled this turn by it.
Provoke {2}{r} (You may discard this to trigger its
ability. Do this any time for its provoke cost.)
Purge the vermin.