Breaking the Weak

Exile each creature with mana value three or less.
If this spell was cast using it's Desperation cost,
exile each creature with mana value four or less
instead.
Desperation 8 - {b}{b} (You may cast this spell for
it's Desperation cost if you have less than 8 life.)
Just take a nice deep breath in. It's not so bad. I'm
only going to dig a little deeper. Exploiting your
secrets, your horrors.