Malves, Seed of Destuction

When Mavles, Seed of Destruction enters the battlefield, destroy a card on the battlefield with a converted mana cost less than it.
Alignment—Deal damage to the card's controller
equal to the destroyed card's mana cost if you
control three green enchantments.
Also creatures you have in the alignment gain
trample.
This world is broken. Even it's protectors have turned
into monstrosities.—Scouter of the Priestess