Altar of Dementia [Tempest] XY200a Set: Portal Three Kingdoms Type:

Set: Portal Three Kingdoms Type: Sorcery Rarity: Rare Cost: {X}{R} Rolling Earthquake deals X damage to each creature without horsemanship and each player

Whereas Mishra works in metals and stone

or if this card in its owner's possession is destroyed by an opponent's card effect: You can send the top 3 cards of your Deck to the Graveyard

Set: Iconic Masters Type: Instant Rarity: Mythic Cost: {U}{U} Counter target spell

Altar of Dementia [Tempest] XY200a Set: Portal Three Kingdoms Type:Set: 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