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 - $39.70
LP - $31.80
MP - $23.80
HP - $15.90
DMG - $8.00