Flying

At the beginning of each player's upkeep, that player sacrifices a creature of their choice. If the player can't, sacrifice this creature.

At the beginning of your end step, each player loses 4 life unless they sacrifice a nontoken creature of their choice.

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

Flying

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

Flying

At the beginning of each combat, any opponent may sacrifice a creature of their choice. If a player does, tap this creature and put a +1/+1 counter on it.

Flying, trample

At the beginning of your upkeep, sacrifice a creature other than this creature, then each opponent loses life equal to the sacrificed creature's power. If you can't sacrifice a creature, tap this creature and you lose 7 life.

Flying

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

At the beginning of each opponent's upkeep, they lose 1 life and you put a -1/-1 counter on up to one target creature they control.

Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Flying

Toxic Spores — At the beginning of your end step, if a permanent you controlled left the battlefield this turn, each opponent loses 3 life.

At the beginning of each player's upkeep, that player sacrifices an artifact, creature, or land of their choice.

At the beginning of your upkeep, each player sacrifices a non-Vampire creature of their choice.

At the beginning of each player's end step, if no creatures died this turn, this creature deals 4 damage to that player.

, Sacrifice a creature: You gain 4 life.

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

Flying

At the beginning of the end step, if you control no Goblins, sacrifice this creature.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

At the beginning of your upkeep, sacrifice a creature if you don't control an Ogre.

At the beginning of your upkeep, sacrifice a permanent.

Whenever this creature deals combat damage to a player, that player sacrifices two permanents of their choice.

Flying, Lifelink

When this creature enters, choose target opponent. Secretly choose a creature or planeswalker that player controls. That player sacrifices a creature or planeswalker of their choice, then sacrifices the chosen permanent.

Flying

This creature gets -1/-1 for each card in your opponents' hands.

At the beginning of your upkeep, each player discards a card.