Smokestack 309 (Urza's Saga)

At the beginning of your upkeep, you may put a soot counter on this artifact. At the beginning of each player's upkeep, that player sacrifices a permanent of their choice for each soot counter on this artifact.

NM - $21.70
LP - $17.30
MP - $13.00
HP - $8.70
DMG - $4.40