Altar of Dementia (Retro Schematic) [The Brothers' War Retro Artifacts] SPA Cañón de los grifos then put a number of

then put a number of +1/+1 counters on it equal to the result

Heretical Healer {1}{B}{B}

to degrade

Set: Tempest Type: Enchantment — Aura Common Cost: {1}{U} Enchant creature Enchanted creature can't attack or block

Urza's Science Fair Project gets the indicated result

Altar of Dementia (Retro Schematic) [The Brothers' War Retro Artifacts] SPA Cañón de los grifos then put a number ofSet: The Brothers' War Retro Artifacts Type: Artifact Rarity: Mythic Cost: {2} Sacrifice a creature: Target player mills cards equal to the sacrificed creature's power. My dreams have brought more visions from our master: an altar, exquisite and perfect. We must build it at once. Writings of Artonac, priest of Gix