Amulet of Quoz

Artifact

Remove this card from your deck before playing if you're not playing for ante.

, Sacrifice this artifact: Target opponent may ante the top card of their library. If they don't, you flip a coin. If you win the flip, that player loses the game. If you lose the flip, you lose the game. Activate only during your upkeep.

Amulet of Quoz is on the reserved list, which means WOTC has self-imposed restrictions from making functional reprints of this card.