Altar of Dementia [Tempest] Planechase Put that many cards from

Put that many cards from the top of your library into your hand

Spend this mana only to cast spells

the player can activate mana abilities only if they're from lands that player controls and only if mana they produce is spent to activate other mana abilities of lands the player controls and/or to play that card

1 Hero of Bretagard

each opponent loses life equal to the life that player lost this turn

Altar of Dementia [Tempest] Planechase Put that many cards fromSet: Tempest Type: Artifact Rarity: Rare Cost: {2} Sacrifice a creature: Target player mills cards equal to the sacrificed creature's power. "It is not that you will go mad. It is that you will beg for madness." Volrath