Nezahal, Primal Tide - Rivals of Ixalan (RIX)

Nezahal, Primal Tide can't be countered.
You have no maximum hand size.
Whenever an opponent casts a noncreature spell, draw a card.
Discard three cards: Exile Nezahal. Return it to the battlefield tapped under its owner's control at the beginning of the next end step.