Well of Lost Dreams (Retro Schematic) [The Brothers' War Retro Artifacts] Skeleton Wall its controller may draw a

its controller may draw a card if its power is greater than each other creature's power

Set: Theros Beyond Death Promos Type: Creature — Ox Rarity: Mythic Cost: {3}{R}{R} When Ox of Agonas enters the battlefield

aether-seer

also put six +1/+1 counters on target land you control and it becomes a 0/0 Elemental creature with haste

When Dreadhorde Butcher dies

Well of Lost Dreams (Retro Schematic) [The Brothers' War Retro Artifacts] Skeleton Wall its controller may draw aSet: The Brothers' War Retro Artifacts Type: Artifact Rarity: Rare Cost: {4} Whenever you gain life, you may pay {X}, where X is less than or equal to the amount of life you gained. If you do, draw X cards. A wish can be controlled. Dreams are for more chaotic, and ungoverned by rationale. Hurkyl's Metaphysics, vol. II