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

The Brothers' War Retro Artifacts

Aetherflux Reservoir

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.

While most power is used for ordinary, everyday tasks, one shouldn't underestimate its potential for the extraordinary.

Kaladesh Remastered

The List

Kaladesh Promos

Kaladesh

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 target creature or player.