Trundle, Troll King

Jungle {b}{g}
Trample
Whenener Trundle, Troll king deals damage to a payer, you may exile target card from a opponent's graveyard, then Trundle, Troll king deals X damages to that player, where X is the mana cost from exiled card.
If you cast Trundle, Troll king from exile, target player put the two cards of top of its library in its graveyard.