Shapechanger. The pixie imp can use its action to polymorph into a beast form of CR 1 or less or back into its true form.

Examples: cat, cat, crab, frog (toad), hawk, lizard, octopus, owl, poisonous snake, fish (quipper), rat (speed 20 ft.), a raven (20 ft., fly 60 ft.), sea horse, spider (20 ft., climb 20 ft.), weasel . Its statistics are the same in each form, except for the speed changes noted.

Any equipment it is wearing or carrying (including its bag of pixie dust) isn't transformed.

The Pixie Imp disappears returning to the Feywild if it dies.

Devil's Sight. Magical darkness doesn't impede the pixie imp's darkvision.

Magic Resistance. The pixie imp has advantage on saving throws against spells and other magical effects.

Familiar. The pixie imp can enter into a contract to serve another creature as a familiar, forming a telepathic bond with its willing master. While the two are bonded, the master can sense what the familiar senses as long as they are within 1 mile of each other. While the familiar is within 10 feet of its master, the master shares the imp’s Magic Resistance trait. If its master violates the terms of the contract, the pixie imp can end its service as a familiar, ending the telepathic bond and disappearing to the feywild.

Pocket.  As an action, the master can temporarily dismiss the familiar. It disappears into a pocket dimension that appears as a 60' diameter glade in the feywild where it awaits summons. As an action while the familiar is temporarily dismissed, the master can cause the familiar to reappear in any unoccupied space within 30 feet of the master.

Host (cursed variant). Some Pixie Imps are cursed to bear the soul of their master. When the master is reduced to 0 hit points the master's mind is joined to the Pixie Imp and may direct its actions. If the master dies their soul inhabits the familiar until the master is revived or the pixie imp is killed or banished to the feywild.

Fission. If brought to the Plane of Avernus the binding spell that created the Pixie Imp will fail causing a 50' radius 10d10 explosion of radiant energy that will create a 300' diameter rift between Avernus and the Feywild that will last 1d10 days. The damage of the explosion will be reduced by 1d10 per 5' distance from the center.

Invisibility. The pixie imp magically turns invisible until it attacks or until its concentration ends (as if concentrating on a spell). Any equipment the imp wears or carries is invisible with it.

Dust. The pixie imp can use a pinch of pixie dust to cast one of the following spells: confusion, dancing lights, detect evil and good, detect thoughts, dispel magic, entangle, fly, phantasmal force, polymorph, sleep. A pinch of dust is created whenever the pixie imp heals from damage during a long rest (the dust is the remnants of the damaged flesh or wings of the pixie imp)

The pixie imp’s innate spellcasting ability is Charisma (spell save DC 12).

Fae Dart. Ranged Spell Attack: +5 to hit, range 30/90 ft., 1 target. Hit: 4 (1d4 + [2 or spell modifier from bonded individual]) Psychic damage.