Source: Tasha's Cauldron of Everything (Adapted for Xitragupten)

4th-level conjuration

Casting Time: 1 action
Range: 90 feet
Components: V, S, M (a pickled tentacle and an eyeball in a platinum inlaid vial worth at least 400 gp)
Duration: Concentration, up to 1 hour

You call forth an aberrant Spirit from deep space. It manifests in an unoccupied space that you can see within range. This corporeal form uses the Aberrant Spirit stat block. The creature disappears when it drops to 0 hit points or when the spell ends.

The creature is an ally to you and your companions. In combat, the creature shares your initiative count, but it takes its turn immediately after yours. It obeys your verbal commands (no action required by you). If you don’t issue any, it take the Dodge action and uses its move to avoid danger.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, use the higher level wherever the spell's level appears on the stat block.

Spell Lists. Warlock (Optional), Wizard (Optional)

Aberrant Spirit
Medium aberration
Armor Class: 11 + the level of the spell (natural armor)
Hit Points: 40 + 10 for each spell level above 4th
Speed: fly 30 ft. (hover)
STR DEX CON INT WIS CHA
16 (+3) 10 (+0) 15 (+2) 16 (+3) 10 (+0) 6 (−2)
Damage Immunities: psychic
Senses: darkvision 60 ft., passive Perception 10
Languages:Aklo, understands the languages you speak
Challenge:
Proficiency Bonus: equals your bonus
Whispering Aura. At the start of each of the aberration’s turns, each creature within 5 feet of the aberration must succeed on a Wisdom saving throw against your spell save DC or take 2d6 psychic damage, provided that the aberration isn’t incapacitated.
Actions
Multiattack. The aberration makes a number of attacks equal to half this spell’s level (rounded down).
Psychic Slam . Melee Spell Attack: your spell attack modifier to hit, reach 5 ft., one creature. Hit: 1d8 + 3 + the spell’s level psychic damage