Aetherflux Reservoir (Retro Schematic) [The Brothers' War Retro Artifacts]

Set: 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