Flying

When Abhorrent Overlord enters the battlefield, create a number of 1/1 black Harpy creature tokens with flying equal to your devotion to black. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.)

At the beginning of your upkeep, sacrifice a creature.

Enchant creature card in a graveyard

When Animate Dead enters the battlefield, if it's on the battlefield, it loses "enchant creature card in a graveyard" and gains "enchant creature put onto the battlefield with Animate Dead." Return enchanted creature card to the battlefield under your control and attach Animate Dead to it. When Animate Dead leaves the battlefield, that creature's controller sacrifices it.

Enchanted creature gets -1/-0.

Whenever Blood Artist or another creature dies, target player loses 1 life and you gain 1 life.

Bloodsoaked Champion can't block.

Raid -- {1}{B}: Return Bloodsoaked Champion from your graveyard to the battlefield. Activate only if you attacked this turn.

At the beginning of your end step, you may sacrifice an artifact, creature, enchantment, land, or planeswalker. If you do, each opponent may sacrifice a permanent that shares a card type with it. For each opponent who doesn't, that player loses 2 life and you draw a card.

Until end of turn, whenever a player taps a Swamp for mana, that player adds an additional {B}.

Put any number of target creature cards from your graveyard on top of your library.

Draw a card.

Exile target creature. Create a Gold token. (It's an artifact with "Sacrifice this artifact: Add one mana of any color.")

Equipped creature gets +1/+1.

Whenever equipped creature deals combat damage to a player, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Flying

At the beginning of your upkeep, draw a card unless target opponent sacrifices a creature or pays 3 life.

{B}, Sacrifice a creature: Target opponent reveals their hand. You choose a card from it. That player discards that card. Activate only as a sorcery.

All creatures get -1/-1 until end of turn for each Swamp you control.

Myriad Landscape enters the battlefield tapped.

{T}: Add {C}.

{2}, {T}, Sacrifice Myriad Landscape: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

Flash

When Omen of the Dead enters the battlefield, return target creature card from your graveyard to your hand.

{2}{B}, Sacrifice Omen of the Dead: Scry 2.

Whenever another creature you control dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

When Prized Statue enters the battlefield or is put into a graveyard from the battlefield, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Flying, trample

Pay 2 life, Sacrifice another creature: Search your library for a card, put that card into your hand, then shuffle.

{1}{B}: Return Reassembling Skeleton from your graveyard to the battlefield tapped.

You have no maximum hand size.

{T}: Add {C}.

Whenever a creature attacks you or a planeswalker you control, that creature's controller loses 1 life and you gain 1 life.

When Shambling Ghast dies, choose one --

• Brave the Stench -- Target creature an opponent controls gets -1/-1 until end of turn.

• Search the Body -- Create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

{T}: Add {C}{C}. Activate only if you control five or more lands.

Tendrils of Corruption deals X damage to target creature and you gain X life, where X is the number of Swamps you control.

You have no maximum hand size.

{T}: Add {C}.

{T}, Sacrifice Tormod's Crypt: Exile target player's graveyard.

Target creature gets -1/-1 until end of turn.

Morbid -- That creature gets -13/-13 until end of turn instead if a creature died this turn.

Choose two target creature cards in your graveyard. Sacrifice a creature. If you do, return the chosen cards to the battlefield tapped.

{T}, Sacrifice a creature: Create a Food token. If the sacrificed creature's toughness was 4 or greater, create two Food tokens instead. (They're artifacts with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")

Worn Powerstone enters the battlefield tapped.

{T}: Add {C}{C}.