Cthulhu, the Awakened

At the beginning of your upkeep you may pay {x}, where X is equal to Cthulhu, the Awakened's
power. If you do give Cthulhu, the Awakened a
+1/+1 counter.
Flying
Creatures your opponent's control with power
less than Cthulhu, the Awakened's power cannot
attack or block.
"He is sleeping; pray you're dead when he wakes." — Professor Armitage