Silent Arbiter [Fifth Dawn] Ugin's Fate these devices doubled the output

these devices doubled the output of Amrit Vatyam's forges

Set: Shadowmoor Type: Legendary Creature — Merfolk Rogue Rarity: Rare Cost: {U/B}{U/B} At the beginning of each end step

or enchanted by anything white

Set: Portal Three Kingdoms Type: Legendary Creature — Human Soldier Warrior Rarity: Rare Cost: {4}{W}{W} Vigilance

Silent Arbiter [Fifth Dawn] Ugin's Fate these devices doubled the outputSet: Fifth Dawn 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.