Unbound Flourishing [The List] Uncommon or adjusting history in the

or adjusting history in the three ways necessary to allow your character to return to the alternate reality from which he or she originally came

From the back of the box:

the ankle stone is connected to the leg stone

another target creature you control gains haste and gets +X/+X until end of turn

Set: Mystery Booster Type: Sorcery Rarity: Rare Cost: {X}{B}{B} Repeat the following process X times

Unbound Flourishing [The List] Uncommon or adjusting history in theSet: The List 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.