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 - $12.80
LP - $10.20
MP - $7.70
HP - $5.10
DMG - $2.60