Smokestack

{4} · Artifact

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.

Motor: se resuelve a mano

Rulings (2)

Adding a counter is optional. If you forget to add one during your upkeep, you cannot back up and add one later.
Wizards of the Coast · 2004-10-04
If a player does not have enough permanents, they sacrifice all the ones they have.
Wizards of the Coast · 2004-10-04