Altar of Dementia [Tempest] Eternal Masters (This effect lasts indefinitely

(This effect lasts indefinitely

Set: Kaladesh Inventions Type: Artifact Rarity: Mythic Cost: {X}{X} Chalice of the Void enters the battlefield with X charge counters on it

Hungering Hydra can't be blocked by more than one creature

Set: Champs and States Type: Creature — Elemental Rarity: Rare Cost: {G}{G}{G} Trample

After the destruction of Argoth

Altar of Dementia [Tempest] Eternal Masters (This effect lasts indefinitelySet: 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