Shadow (This creature can block or be blocked by only creatures with shadow.)When Faceless Devourer enters, exile another target creature with shadow.When Faceless Devourer leaves the battlefield, return the exiled card to the battlefield under its owner's control.
: Wormwood Dryad gains forestwalk until end of turn and deals 1 damage to you. (It can't be blocked as long as defending player controls a Forest.): Wormwood Dryad gains swampwalk until end of turn and deals 1 damage to you. (It can't be blocked as long as defending player controls a Swamp.)
Return target creature card from your graveyard to the battlefield.Flashback—Sacrifice three creatures. (You may cast this card from your graveyard for its flashback cost. Then exile it.)
Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)When Subterranean Shambler enters or leaves the battlefield, it deals 1 damage to each creature without flying.
Return target black creature card from your graveyard to your hand.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.)