Domain — All creatures get -1/-1 until end of turn for each basic land type among lands you control.

Whenever a land an opponent controls enters, that player loses 2 life and you gain 2 life.

When this creature enters, you may have target opponent sacrifice a creature of their choice.

When this creature enters, create a 5/5 black Demon creature token with flying.
At the beginning of your upkeep, you lose 2 life.

When this creature enters, any player may sacrifice two creatures of their choice. If a player does, sacrifice this creature.

Flying
When this creature enters, put target creature card from an opponent's graveyard onto the battlefield under your control. It gains haste. At the beginning of your next end step, exile it.
Persist

Purraj has first strike as long as it's attacking.
Whenever a player casts a black spell, you may pay . If you do, put a +1/+1 counter on Purraj.

Whenever this creature enters or attacks, return up to one target Vampire card from your graveyard to the battlefield with a finality counter on it. You lose life equal to its mana value.

Sacrifice a Human: Transform this creature. Activate only as a sorcery.

Flying
At the beginning of your upkeep, you may sacrifice a nonartifact creature. If you do, put a +1/+1 counter on this creature. If you don't, tap this creature.

Search your library for a card, put that card into your hand, then shuffle.
Cycling

Destroy all green creatures or all white creatures. They can't be regenerated. You lose 2 life for each creature that died this way.

Target opponent loses 5 life unless that player discards two cards or sacrifices a creature or planeswalker of their choice. Repeat this process once.

Flying
Whenever a creature dealt damage by this creature this turn dies, put a +1/+1 counter on this creature.
Threshold — As long as there are seven or more cards in your graveyard, this creature is white and has ": Destroy target black creature."

Unless target player pays , that player loses 5 life and you gain 5 life.

Exploit
When this creature exploits a creature, each opponent sacrifices a creature of their choice.

Phalanx Commander — When this creature enters, create two tapped 2/2 black Necron Warrior artifact creature tokens.
Unearth

At the beginning of each player's upkeep, that player sacrifices a non-Elf creature of their choice.

Sacrifice a creature: Target player discards two cards. Activate only as a sorcery.

Whenever you gain life, target opponent loses that much life.

When this creature specializes, seek a creature card and put it into your graveyard, then conjure two duplicates of it into your graveyard.
At the beginning of combat on your turn, target creature you control gets +X/+0 until end of turn, where X is the number of creature cards in your graveyard.

This card is a specialized version of Sarevok the Usurper.

Menace
Whenever Sauron attacks, exile target creature card from your graveyard. Create a tapped and attacking token that's a copy of that card, except it's a 3/3 black Wraith with menace. At the beginning of the next end step, exile that token unless Sauron is your Ring-bearer.

Trample
At the beginning of combat on your turn, put a +1/+1 counter on Savanti Romero. Then you draw X cards and lose X life, where X is the number of counters on Savanti Romero.

Flying
Whenever you gain life, put a +1/+1 counter on this creature.

, Exile a card from your graveyard: This enchantment deals 1 damage to each creature and each player.

Choose up to five [paw] worth of modes. You may choose the same mode more than once.
[paw] — Each player sacrifices a creature of their choice.
[paw][paw] — Draw a card for each creature that died under your control this turn.
[paw][paw][paw] — Each opponent loses X life, where X is the number of creature cards in your graveyard.

Exile target nonland card from your graveyard. Search your library for any number of cards with the same name as that card, reveal them, put them into your hand, then shuffle.

At the beginning of each player's upkeep, that player loses 2 life and draws two cards.

Flying
Whenever one or more other creatures die, put a +1/+1 counter on this creature. This ability triggers only once each turn.