Slagstone Refinery⁣ - The Brothers' War⁣ (Uncommon)⁣ [243]

Slagstone Refinery is a four-mana artifact from The Brothers' War that generates tapped Powerstone tokens whenever it or another nontoken artifact you control goes to the graveyard or is exiled. This ability provides a steady source of colourless mana, which can support various strategies, especially those that focus on sacrificing or recurring artifacts. However, its effectiveness may be limited in decks that don't feature nontoken artifacts heavily. Available from Vault of Cards, a UK-based Magic: The Gathering store with fast delivery.