Ikthau'Kahl, Chaos Remnant

Prowess
There Will Be Mayhem - Whenever you cast your
second spell this turn, exile the top card of a library.
If the card is an instant or sorcery, you may cast it without paying its mana cost this turn. If it's a creature, Ikthau'kahl gains +X/+0 until end of
turn, where X is that creature's power. Otherwise,
Ikthau'Kahl deals 3 damage to target player chosen
at random.
"I am a monster, but I've always been more."