TrampleThreshold — As long as seven or more cards are in your graveyard, Possessed Centaur gets +1/+1, is black, and has ", : Destroy target green creature."
Whenever Grotesque Hybrid deals combat damage to a creature, destroy that creature. It can't be regenerated.Discard a card: Grotesque Hybrid gains flying and protection from green and from white until end of turn.
Enchant creatureEnchanted creature gets +1/+2 and has protection from black.Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
Psychotic Haze deals 1 damage to each creature and each player.Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
FlyingThreshold — As long as seven or more cards are in your graveyard, Possessed Aven gets +1/+1, is black, and has ", : Destroy target blue creature."
Defender (This creature can't attack.)Whenever you discard a card, you may sacrifice Pitchstone Wall. If you do, return the discarded card from your graveyard to your hand.
HasteThreshold — As long as seven or more cards are in your graveyard, Centaur Chieftain has "When Centaur Chieftain enters, creatures you control get +1/+1 and gain trample until end of turn."