Birgi, God of Storytelling // Harnfel, Horn of Bounty [KHM-123]

Whenever you cast a spell, add {R}. Until end of turn, you don't lose this mana as steps and phases end. Creatures you control can boast twice during each of your turns rather than once. // Discard a card: Exile the top two cards of your library. You may play those cards this turn.