Blazagni, the Firemelder

Flying, haste
Whenever Blazagni, the Firemelder deals damage to an opponent, exile the top card of your library face down. You may play that card for as long as you control Blazagni, the Firemelder.
Whenever you cast a red instant or sorcery spell, you may have Blazagni, the Firemelder deals 3 damage to target creature or player.