Undead Spirit

Medium undead, -
Armor Class 11 + the level of the spell (natural armor)
Hit Points 30 (Ghostly and Putrid only) or 20 (Skeletal only) + 10 for each spell level above 3rd
Speed 30 ft.; fly 40 ft. (hover) (Ghostly only)
STR
12 (+1)
DEX
16 (+3)
CON
15 (+2)
INT
4 (-3)
WIS
10 (+0)
CHA
9 (-1)
Damage Immunities necrotic, poison
Condition Immunities exhaustion, frightened, paralyzed, poisoned
Senses darkvision 60 ft., passive Perception 10
Languages understands the languages you speak
Challenge -     Proficiency Bonus equals your bonus
Festering Aura (Putrid Only).
Incorporeal Passage (Ghostly Only).
ACTIONS
Multiattack.
Deathly Touch (Ghostly Only).
Grave Bolt (Skeletal Only).
Rotting Claw (Putrid Only).

This full creature's stat block is not available (not OGL).

See the summon undead spell.
Rules (Tasha´s Cauldron of Everything)