Leviathan, Summoned Jinn

Levisthan can't be countered.
You have no maximum hand size.
Whenever an opponent casts a noncreature spell, draw a card.

Discard three cards: Exile Leviathan. Return it to
the battlefield tapped under its owner's control at
the beginning of the next end step.

Leviathan, Summoned Jinn is a copy of
Nezahal, Primal Tide.