, Sacrifice an artifact: Target player mills three cards.Grinding Station turns artifacts into milling and untaps whenever another artifact arrives. Tap it and sacrifice an artifact to mill a targeted player for three cards, then use later artifact entries to prepare the next activation. A deck that repeatedly creates or returns artifacts can turn that rhythm into a dedicated engine.
Underworld Breach and a zero-mana artifact provide a well-known route. Escape the artifact, use its entry to untap the Station, then sacrifice it to mill yourself for more graveyard material. The loop's sustainability depends on the escape costs and the cards available to exile, so count the resources rather than assuming every starting graveyard is enough.
Outside a combo, disposable artifacts such as Treasures can become mill triggers, and artifact recursion can supply repeat uses. Milling yourself can set up recursion, while milling an opponent can move toward a library-based finish. The Station can even sacrifice itself as the artifact cost, though doing so ends its ongoing untap engine unless you can recover it.
Because it is normally a noncreature artifact, the tap ability can be used on the turn it enters. Its entry also triggers its own untap ability, which can matter in careful stack sequencing. Leave room for graveyard protection and a payoff beyond simply milling more cards. Grinding Station is most useful when the deck has a clear way to turn those repeated three-card events into progress or a finish.
