Silent Arbiter [Commander 2020] Giant Warrior When that mana is spent

When that mana is spent to cast an instant or sorcery spell

Set: Mercadian Masques Type: Enchantment Rarity: Rare Cost: {3}{B}{B} Whenever a creature dies

When Cavalier of Night enters the battlefield

You may have Phyrexian Metamorph enter the battlefield as a copy of any artifact or creature on the battlefield

Silent Arbiter [Commander 2020] Giant Warrior When that mana is spentSet: Commander 2020 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.