Unbound Flourishing - Modern Horizons - 189

Enchantment

Mana 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.

Mythic · Modern Horizons · #189 (MH1)

Illustrated by Tomasz Jedruszek