Aetherflux Reservoir (BRR 65z)

Artifact • Mana cost: {4} • The Brothers' War Retro Artifacts • Mythic

Whenever you cast a spell, you gain 1 life for each spell you've cast this turn.
Pay 50 life: This artifact deals 50 damage to any target.

"These estimates are conservative. Its true capacity may be far, far greater."
—Research notes, signature illegible

Illustrated by Yeong-Hao Han.