Githyanki Gish

Medium Humanoid (Gith, Wizard), Any Alignment

STR
17 (+3)
DEX
15 (+2)
CON
14 (+2)
INT
16 (+3)
WIS
15 (+2)
CHA
16 (+3)
Spellcasting (Psionics).

The githyanki casts one of the following spells, requiring no spell components and using Intelligence as the spellcasting ability (spell save DC 15):

At will: light, mage hand (the hand is invisible), message

3/day each: fireball, invisibility, nondetection (self only)

1/day each: dimension door, plane shift, telekinesis

Actions

Multiattack.

The githyanki makes three Longsword or Telekinetic Bolt attacks, or it makes one of those attacks and uses Spellcasting.

Longsword.

Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) slashing damage, or 8 (1d10 + 3) slashing damage if used with two hands, plus 22 (5d8) psychic damage.

Telekinetic Bolt.

Ranged Spell Attack: +7 to hit, range 120 ft., one target. Hit: 28 (8d6) force damage.

Bonus Actions

Astral Step (Recharge 4-6).

The githyanki teleports, along with any equipment it is wearing or carrying, up to 30 feet to an unoccupied space it can see.

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Githyanki Gish

Source: Mordenkainen Presents: Monsters of the Multiverse, p. 140 - Licenses and attribution