Wartortle

Evolve - {4}{u}: Search your library for a card named Blastoise and place it onto the battlefield tapped. Exile Wartortle.

{2}{u}{t}: Target player mills cards from their library until they mill a land. Until end of turn, Wartortle gains +0/+X where X is the number of cards milled this way. If X is 4 or more, untap Wartortle and draw a card.