Nezahal, Primal Tide is a rare Legendary Creature — Elder Dinosaur card from Secret Lair Drop (SLD), collector number 2236.
This spell 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.