FlyingAt the beginning of your upkeep, mill a card.Threshold — As long as seven or more cards are in your graveyard, Bloodcurdler gets +1/+1 and has "At the beginning of your end step, exile two cards from your graveyard."
, Discard a card: Crashing Centaur gains trample until end of turn.Threshold — As long as seven or more cards are in your graveyard, Crashing Centaur gets +2/+2 and has shroud. (It can't be the target of spells or abilities.)
At the beginning of your upkeep, exile a card from your graveyard.Threshold — As long as seven or more cards are in your graveyard, Decaying Soil has "Whenever a nontoken creature is put into your graveyard from the battlefield, you may pay . If you do, return that card to your hand."
, Sacrifice a creature: Target creature gets -2/-2 until end of turn., Exile a creature card from your graveyard: Target creature gets -2/-2 until end of turn.
, Exile Shifty Doppelganger: You may put a creature card from your hand onto the battlefield. If you do, that creature gains haste until end of turn. At the beginning of the next end step, sacrifice that creature. If you do, return Shifty Doppelganger to the battlefield.