Silent Arbiter [Commander Masters] Basic Water Energy Set: Limited Edition Beta Type:

Set: Limited Edition Beta Type: Artifact Rarity: Rare Cost: {4} Whenever a land is put into a graveyard from the battlefield

or secrets

its controller may discard a card that shares a color with that spell

Set: The Brothers' War Retro Artifacts Type: Artifact Creature — Construct Rarity: Rare Cost: {3} Whenever Scrap Trawler or another artifact you control is put into a graveyard from the battlefield

Silent Arbiter [Commander Masters] Basic Water Energy Set: Limited Edition Beta Type:Set: Commander Masters Type: Artifact Creature Construct Rarity: Rare Cost: {4} No more than one creature can attack each combat. No more than one creature can block each combat. Scholars say that arbiters exist on every world, created by an unknown hand to enforce justice.