mtg.wtf

Mutate {5}{U}
Whenever this creature mutates, tap up to X target creatures, where X is the number of times this creature has mutated. Those creatures don't untap during their controller's next untap step.

Affinity for tokens
Whenever a token you control enters, tap target nonland permanent an opponent controls. It doesn't untap during its controller's next untap step.

Defender

Whenever you draw your second card each turn, this creature gains flying until end of turn.

Whenever you draw a card, you may pay {1}. If you do, put a +1/+1 counter on this creature and create a 1/1 blue Tentacle creature token.

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.

Mutate {3}{U}
Flash
Whenever this creature mutates, you may return target creature an opponent controls to its owner's hand.

When this creature enters, each opponent creates a 1/1 red Pirate creature token with "This token can't block" and "Creatures you control attack each combat if able."
Spells your opponents cast that target this creature cost {3} more to cast.

Flash
Defender

Landfall — Whenever a land you control enters, each opponent mills three cards.

Mutate {1}{U}
Flash
Whenever this creature deals combat damage to a player, draw a card.

{T}: Scry 1.