Armor Class undefined
Hit Points 40 + 10 for each spell level above 4
Speed 30 ft., fly 30 ft.
Damage Immunities psychic
Senses Darkvision 60 ft., passive Perception 10
Languages Deep Speech, understands the languages you know
Challenge —
Regeneration (Slaad Only). The spirit regains 5 Hit Points at the start of its turn if it has at least 1 Hit Point.
Whispering Aura (Mind Flayer Only). At the start of each of the spirit's turns, the spirit emits psionic energy if it doesn't have the Incapacitated condition. wis DC equals your spell save DC, each creature (other than you) within 5 feet of the spirit. 2d6 Psychic damage.
Multiattack. The spirit makes a number of attacks equal to half this spell's level (round down).
Claw (Slaad Only). m Bonus equals your spell attack modifier, reach 5 ft. Hit: 1d10 + 3 + summonSpellLevel Slashing damage, and the target can't regain Hit Points until the start of the spirit's next turn.
Eye Ray (Beholderkin Only). r Bonus equals your spell attack modifier, range 150 ft. Hit: 1d8 + 3 + summonSpellLevel Psychic damage.
Psychic Slam (Mind Flayer Only). m Bonus equals your spell attack modifier, reach 5 ft. Hit: 1d8 + 3 + summonSpellLevel Psychic damage.
Player's Handbook (2024), p. 322