Unbound Flourishing [Modern Horizons] Elf If each of those creatures

If each of those creatures could block all creatures that the other is blocking

if you control at least five other Mountains

Set: Ultimate Masters Box Topper Type: Legendary Land Rarity: Mythic Each land is a Swamp in addition to its other land types

Ignore this effect for each creature the player didn't control continuously since the beginning of the turn

When Hangarback Walker dies

Unbound Flourishing [Modern Horizons] Elf If each of those creaturesSet: 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.