Baran-Kas, Chaos Lord

+3: Each player exiles a card from their hand. You may play cards exiled this way and you may spend mana as though it were mana of any color.
-4: Exile the top five cards of each players library. You may play cards exiled this way and you may spend mana as though it were mana of any color.
-12: Exile the top twenty cards of each players library, you may play three additional lands this turn and those cards without paying its mana cost.