Changeling (This card is every creature type.), flying
Whenever Croft’s Scion deals combat damage to a player, wager. (Shuffle, then exile the top card of your library. At the beginning of your upkeep, put a stake counter on it. Turn it face up at any time. When you do, if it has stake counters greater than its mana cost, cast it without paying its mana cost.)
“This’ll only be the third time I’ve been banned from the tables this week. I’ve got a lot more in store yet.”