Archon of Cruelty

Flying
Whenever this creature enters or attacks, target opponent sacrifices a creature or planeswalker of their choice, discards a card, and loses 3 life. You draw a card and gain 3 life.

Duskmourn: House of Horror Commander

Flying
Whenever Archon of Cruelty enters or attacks, target opponent sacrifices a creature or planeswalker, discards a card, and loses 3 life. You draw a card and gain 3 life.

Modern Horizons 3 Commander

Flying
Whenever Archon of Cruelty enters the battlefield or attacks, target opponent sacrifices a creature or planeswalker, discards a card, and loses 3 life. You draw a card and gain 3 life.

Modern Horizons 2

Modern Horizons 2 Promos

You and the opponent you target take all the actions in the order listed. Notably, the creature or planeswalker they sacrifice won't be on the battlefield as they discard a card or lose life. If any abilities trigger, they will wait to be put on the stack until after the spell resolves. If any abilities controlled by that opponent trigger but losing 3 life causes them to lose the game, none of those abilities will be put on the stack.