Achilles,Hunter of gods

+2: Put three 1/1 black Wraith tokens with flying onto the battlefield.
-6: Search your graveyard for up to three Creatures, Instants or Sorcery's reveal them put them into your hand.
-20: Destroy all creatures not under your control, gain one heath for every three creatures killed. Discard your hand if you gain 20 or more heath.