The full rule reads: If a player is casting a spell that has an X in its mana cost, the value of X isn't defined by the text of that spell, and an effect lets that player cast that spell while paying neither its mana cost nor an alternative cost that includes X, then the only legal choice for X is 0
We're all quite used to this effect on digital card games, especially in Hearthstone where cards that shuffle cards into the opponent's deck are fairly commonplace
Flashfire (2014) Charizard fans got a full buffet in Flashfire , with multiple versions of the fire dragon, including Mega forms and secret rares
Descendants' Path Descendants' Path can give you a free creature every turn, and youll see this green enchantment played in decks that want to cast expensive creatures like dinosaurs, dragons, and big slivers
Adeline doesn't have to be among them