Aberrant Magic. The effects of the counterspell and dispel magic spells have no effect on spells the eye has cast.

Innate Spellcasting (Psionics). The eye's innate spellcasting ability is Intelligence (spell save DC 16). The eye can innately cast the following spells, requiring no components:

• At will: arms of hadar, detect magic, detect thoughts, identify, invisibility, levitate, sending
• 3/day each: clairvoyance, hunger of hadar, Otiluke's resilient sphere
• 1/day each: contact other plane (the eye automatically succeeds on the Intelligence saving throw), plane shift (self only)

Overtake (Recharge 5-6). The eye attempts to magically transpose itself with the eye of a creature within 30 feet of it. That creature must make a DC 16 Intelligence saving throw. A creature without eyes automatically succeeds on this saving throw. On a failed save, the eye transposes with one of the creature's original eyes. The eye remains transposed until the creature drops to 0 hit points, the eye ends it as a bonus action, the eye is forced out by an effect like the dispel evil and good spell, or the affected creature uses an action to make an Intelligence saving throw, ending the transposition on a success. When the transposition ends, the eye reappears at an unoccupied space within 30 feet.

While transposed, the eye can't be targeted by attacks, spells, or effects, and it decides what actions the affected creature will take, but has no control over the creature's movement. The only action the eye can take while transposed is the Cast a Spell action.

The creature is immune to this eye's Overtake for 24 hours after succeeding on the saving throw or after the transposition ends.

[TRANSCRIBER'S NOTE: It's unclear whether or not the victim of this ability is able to see with the aberrant eye. If not, they should probably gain the trait Poor Depth Perception - They have disadvantage on any attack roll against a target more than 30 feet away.]