Immortal. Invisumicus is incapable of taking damage and may choose if any attack holds any effect at all.

Omniscient Spellcaster (unlimited use). Invisumicus can cast any spell or cantrip that can be used in the current campaign. His attack rolls are automatically critical hits and the saving throws from his spells are automatically failed.

Legendary Illusionist. Invisumicus can create illusions without any restraint at all, even manipulating one's own sense of self. This does not require an action, and can be used at any point.

Illusory Existence. Invisumicus may choose to make his illusions reality, or layer one of these realities with illusions. This does not require an action, and can be used at any point.

Frightful Presence. After rolling for initiative to fight against Invisumicus, the creature immediately gains the frightened condition until the end of the fight.

Nonmagical Destroyer. As well as his spells, all of Invisumicus's other attacks are automatically critical hits and/or cause an automatic failed saving throw.

Movement. Invisumicus does not move in the way you know. He simply is where he wants to be in every dimension, and can even be in multiple places, and even planes, at once. He does not have a set movement speed, but he is beyond it, as not even time or reality can restrict his movement, allowing him to warp the rules of Dungeons and Dragons as he pleases. He may appear to move normally, but his movement cannot be impeded, and he either destroys or phases through any obstacle that he touches.

Inescapable Warden. Any attack used by Invisumicus ignores any  immunity, legendary resistance, or actions, bonus actions, or reactions that would otherwise prevent effects or damage.

Divine Knowledge. Invisumicus cannot be taken by surprise, as he knows every action, bonus action, and reaction before they are even used. He also can analyze any creature with a single glance and is able to gaze at their stat blocks or character sheets. Finally, he may take a reaction any time he is attacked.

Written Grant. Though simply giving someone a wish for free is not in line with the laws of nature according to Invisumicus, he may give a creature an incredibly difficult ordeal (as long as they are capable of it) involving one or many good deeds that they must complete in order to gain his gift of one free use of the wish spell. However, this test is also to observe the ethics behind the task's completion. The agreement is made on a spectral parchment and is signed in the blood of the creature and Invisumicus.

Action Infinity. Invisumicus can take two actions on his turn against each creature that has made an initiative roll against him.

Damage Store. All attempted attacks on Invisumicus have their damage stored, with their rolls being accounted for. This damage all adds up in a well that Invisumicus can dish back out as a bonus action.

Initiative Control. Upon rolling for initiative, Invisumicus can choose where his turn is in the order.

Perfect Senses. If you know something, Invisumicus does as well, and he knows everything there is to know about every given thing in all of the planes. He knows location, secrets, past, present, and future, but he will almost never reveal this information. He also has every sense for infinite distance.

Insecurity. Invisumicus may choose his skill check rolls.

Trait [End]. Invisumicus can edit stat blocks and character sheets as he chooses, creating, granting, or destroying abilities and traits as well as attacks, inventories, spells, and even editing stats in any way he chooses. This may be done to any creature, with no exceptions. This does not require an action to be done.

Library of Essence. Invisumicus holds a drive in his mind full of all entities and items and places and all of their powers (he views their stat blocks), with the ability to access each one as he pleases. This also contains identification of each of the rare few creatures that he allows through the portal. It is unknown what conditions must be met for this to occur. From this library, he may delete said entities, items, and places, confiscate their power, or bring change, editing them to a degree of his choosing. This does not require an action to be done, and may be used at any point.

Multiattack. Invisumicus has two actions against every creature that is in initiative against him, which he can choose to divide between his attacks.

Undertaking Claw. Weapon Attack: automatic critical hit, reach ? ft., ? target. Hit: 35 (5d10 + 10) slashing damage + incapacitated condition for 1 round.

Great Bite. Weapon Attack: automatic critical hit, reach ? ft., ? targets. Hit: Death condition.

Breath Weapon. Ranged Weapon Attack: automatic hit, range ? ft., ? target. Hit: Erases everything touched to its very core besides Invisumicus, with not even energy or subatomic particles remaining. all types damage.

Restraining Order. Makes all creatures chosen by Invisumicus restrained for as long as he pleases.

Damage Well. Invisumicus releases all would-be damage from attacks against him upon one creature in the form of necrotic damage. The counter resets after this action is used.

Invisumicus has two bonus actions for each creature currently in initiative against him.

Murder. Erases the attacker from existence.

Barrier. Creates an impenetrable, invincible, and invisible surface of any size. Invisumicus may use and control this barrier however he wants.

Movement. Invisumicus may move away from an attack to any location that he desires.

Deflect. Invisumicus may reroute or erase any attack coming his way. If he reroutes it, the attack is instead against its user, or if it is ranged, anyone chosen by Invisumicus.

Invisumicus can take 1 legendary action for each creature in initiative against him, each able to be used at the end of another creature's turn. He only has one legendary action to choose. Legendary actions reset after each round.

Table Flip (Costs 1 Action). Any attack being used by the creature that has just taken their turn before Invisumicus uses this action is stopped by an unseen force, and their turn is replaced by another from Invisumicus.

Invisumicus has one mythic action that he may use at any point and any number of times, but is generally cautious of, as he does not want to destroy the art of his other aspect(mysterious, am I right?).

Great Revamp. Invisumicus may reset or edit existence as he pleases.