Skithrax, Herald of Horror

Protection from creatures with equal power and toughness

Whenever you cast a creature spell, if its power and
toughness aren't equal, you may draw cards equal
to the difference. If you do, discard that many cards
and Skithrax deals that much damage to any target.

"We will rip minds. We will slit throats. We will
rend flesh. At last, our dawn is rising. We will show
them the meaning of abomination."