Dying Star Core

When Dying Star Core enters the battlefield, sacrifice a creature. at the beginning of your end step, each opponent loses life equal to the number of creatures that died this turn.

{3}, {t}: Sacrifice a creature. Create a 2/2 colorless Void creature token with “When this creature dies, target opponent loses 2 life and you gain 2 life.”

“A star dies in silence—but its echo devours worlds.”