Aetherflux Reservoir KLD-192/5075 (The List Reprints)

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.

NM - $58.20
LP - $46.60
MP - $35.00
HP - $23.30
DMG - $11.70