Unbound Flourishing [Modern Horizons] Merfolk Mutant Scholars say that arbiters exist

Scholars say that arbiters exist on every world

When Necromancy enters the battlefield

He has "friends" in places both high and low

Gonna bosh 'n gonna nosh 'n da hurt'll disappear

Unbound Flourishing [Modern Horizons] Merfolk Mutant Scholars say that arbiters existSet: Modern Horizons Type: Enchantment Rarity: Mythic Cost: {2}{G} Whenever you cast a permanent spell with a mana cost that contains {X}, double the value of X. Whenever you cast an instant or sorcery spell or activate an ability, if that spell's mana cost or that ability's activation cost contains {X}, copy that spell or ability. You may choose new targets for the copy.