The Mightstone and Weakstone [The Brothers' War Prerelease Promos] Kobold Shaman Set: Amonkhet Type: Legendary Artifact

Set: Amonkhet Type: Legendary Artifact Rarity: Rare Cost: {2} At the beginning of your end step

Set: Innistrad: Double Feature Type: Instant Rarity: Common Cost: {1}{R} Choose one —

return Spirit Loop to its owner's hand

and it can be played on its own or combined with the original One Night Ultimate Werewolf game

then discards two cards

The Mightstone and Weakstone [The Brothers' War Prerelease Promos] Kobold Shaman Set: Amonkhet Type: Legendary ArtifactSet: The Brothers' War Prerelease Promos Type: Legendary Artifact Powerstone Rarity: Rare Cost: {5} When The Mightstone and Weakstone enters the battlefield, choose one Draw two cards. Target creature gets 5 5 until end of turn. {T}: Add {C}{C}. This mana can't be spent to cast nonartifact spells. (Melds with Urza, Lord Protector.)