Altar of Dementia Tweet NM-Mint, English, limit 9 $0.50 / $0.60 credit Buy This Product Details Color: Artifact Card Text: Sacrifice a creature Target player puts a number of cards equal to the sacrificed creature's power from the top of his or her library into his or her graveyard. Rarity: R Cost: 2 Card Type: Artifact Name: Altar of Dementia Finish: Regular Set Name: Tempest