Darkwater Horror

Morph {2}{u/b}

Each creature card in your hand without morph has morph. Its morph cost is equal to its mana cost reduced by {2}.

When Darkwater Horror or another Serpent, Kraken, or Horror you control is turned face up, exile target attacking creature with power less than that creature.

"Tread lightly, lest the depths wake / tread lightly, lest you seal your fate"