Void Warlock

Whenever you cast your second spell each turn, you may pay {1}. If you do, put a +1/+1 count on Void Warlock.

Whenever you cast your third spell each turn, you may pay {1}. If you do, put your choice of a flying, deathtouch, or trample counter on it.

Whenever you cast your fourth spell each turn, you may pay {1}. Void Warlock becomes an Eldritch Horror with base power and toughness 6/6.

"With each spell cast, reality bends, awakening ancient horrors within."