+Underworld (15)
This spell costs less to cast, where X is your devotion to black. (Each in the mana costs of permanents you control counts toward your devotion to black.)
Destroy target creature.
As an additional cost to cast this spell, sacrifice a creature.
Choose target creature card in your graveyard. Return that card and the sacrificed card to the battlefield under your control at the beginning of your next upkeep. Exile Rescue from the Underworld.
Flying, vigilance
, Pay 3 life: Regenerate Sentry of the Underworld.
, Discard a card: Create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")
, , Sacrifice The Underworld Cookbook: Return target creature card from your graveyard to your hand.
Each nonland card in your graveyard has escape. The escape cost is equal to the card's mana cost plus exile three other cards from your graveyard. (You may cast cards from your graveyard for their escape cost.)
At the beginning of the end step, sacrifice Underworld Breach.
Underworld Cerberus can't be blocked except by three or more creatures.
Cards in graveyards can't be the targets of spells or abilities.
When Underworld Cerberus dies, exile it and each player returns all creature cards from their graveyard to their hand.
Underworld Charger can't block.
Escape—, Exile three other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)
Underworld Charger escapes with two +1/+1 counters on it.
Constellation — Whenever Underworld Coinsmith or another enchantment enters the battlefield under your control, you gain 1 life.
, Pay 1 life: Each opponent loses 1 life.
Enchant land
Enchanted land has ", Pay 1 life: Draw a card."
Whenever an opponent draws a card, Underworld Dreams deals 1 damage to that player.
Underworld Fires deals 1 damage to each creature and each planeswalker. If a permanent dealt damage this way would die this turn, exile it instead.
When Underworld Hermit enters the battlefield, create a number of 1/1 green Squirrel creature tokens equal to your devotion to black. (Each in the mana costs of permanents you control counts toward your devotion to black.)
Underworld Rage-Hound attacks each combat if able.
Underworld Rage-Hound escapes with a +1/+1 counter on it.
Whenever Underworld Sentinel attacks, exile target creature card from your graveyard.
When Underworld Sentinel dies, put all cards exiled with it onto the battlefield.
Enchant creature
Enchanted creature gets -3/-2.
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