This spell can't be countered. Flying Whenever you draw a card, Niv-Mizzet deals 1 damage to any target. Whenever a player casts an instant or sorcery spell, you draw a card.

At the beginning of your end step, draw a card if your life total is greater than your starting life total. Otherwise, you gain 2 life.

Flying You have no maximum hand size. Whenever a source you control deals noncombat damage to an opponent, you draw that many cards.

Enchant creature Whenever enchanted creature deals damage to an opponent, you may draw a card.