Pillar Tombs of Aku
Visions — Rare
At the beginning of each player's upkeep, that player may sacrifice a creature. If that player doesn't, he or she loses 5 life and you sacrifice Pillar Tombs of Aku.
"Aku, City of Hidden Graves / Aku, City of Lost Kings / Aku, welcome me."
—Pillar tomb inscription