Aetherflux Reservoir (PKLD 192s)

Artifact • Mana cost: {4} • Kaladesh Promos • Rare

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.

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

Illustrated by Cliff Childs.