Cubone

Grounded

When this creature enters the battlefield, tap target creature an opponent controls if white mana was spent to cast this creature.
Target player loses 2 life and you gain 2 life if black mana was used to cast this creature.
Do both if both black and white mana were used.

Evolve - {2}{w/b}: Search your library for a card named Marowak and place it onto the battlefield tapped. Exile Cubone.