Master of Predicaments

Flying
Whenever this creature deals combat damage to a player, choose a card in your hand. That player guesses whether the card's mana value is greater than 4. If the player guessed wrong, you may cast the card without paying its mana cost.

Flying\r
Whenever Master of Predicaments deals combat damage to a player, choose a card in your hand. That player guesses whether the card's converted mana cost is greater than 4. If the player guessed wrong, you may cast the card without paying its mana cost.