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.

When Cauldron Familiar enters the battlefield, each opponent loses 1 life and you gain 1 life. Sacrifice a Food: Return Cauldron Familiar from your graveyard to the battlefield.

Whenever another creature enters the battlefield under your control, each opponent loses 1 life.

Deathtouch Whenever another creature enters the battlefield under your control, you gain 1 life. Whenever another creature you control dies, each opponent loses 1 life.

{T}, Sacrifice two other creatures: Any number of target players each lose 2 life and sacrifice a creature. You add {B}{B} and draw a card.

Whenever you gain life, target opponent loses that much life. {3}{B}{B}: Creatures you control gain lifelink until end of turn.

Haste Whenever a creature an opponent controls dies, put a +1/+1 counter on Yahenni, Undying Partisan. Sacrifice another creature: Yahenni gains indestructible until end of turn.

When Bastion of Remembrance enters the battlefield, create a 1/1 white Human Soldier creature token. Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life.

Flash Whenever a creature you control dies, each opponent sacrifices a creature.

As an additional cost to cast this spell, sacrifice an artifact or creature. Draw two cards and create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

({T}: Add {W} or {B}.) As Godless Shrine enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

({T}: Add {W}.)