Syr Konrad, the Grim (J22-474) - Jumpstart 2022

Whenever another creature dies, or a creature card is put into a graveyard from anywhere other than the battlefield, or a creature card leaves your graveyard, Syr Konrad, the Grim deals 1 damage to each opponent.
: Each player mills a card. (They each put the top card of their library into their graveyard.)