Aetherflux Reservoir (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts] Powerstone Then each creature you control

Then each creature you control becomes a Phyrexian in addition to its other types

then shuffle

Put all commanders from the command zone onto the battlefield under your control

Set: The Brothers' War Prerelease Promos Type: Legendary Artifact — Powerstone Rarity: Rare Cost: {5} When The Mightstone and Weakstone enters the battlefield

Seven for the Dwarf-lords in their halls of stone

Aetherflux Reservoir (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts] Powerstone Then each creature you controlSet: The Brothers' War Retro Artifacts Type: Artifact Rarity: Mythic Cost: {4} Whenever you cast a spell, you gain 1 life for each spell you've cast this turn. Pay 50 life: Aetherflux Reservoir deals 50 damage to any target. "These estimates are conservative. Its true capacity may be far, far greater." Research notes, signature illegible