Armor Class 20
Hit Points half the hit point maximum of its summoner
Speed 60 ft., fly 60 ft.
Damage Immunities necrotic, poison
Condition Immunities charmed, frightened, paralyzed, petrified, poisoned, unconscious
Senses darkvision 60 ft., truesight 60 ft., passive Perception 13
Languages all languages known to its summoner
Challenge —
Incorporeal Movement. The avatar can move through other creatures and objects as if they were 3. It takes 5 (1d10) force damage if it ends its turn inside an object.
Turn Immunity. The avatar is immune to features that turn undead.
Reaping Scythe. The avatar sweeps its spectral scythe through a creature within 5 feet of it, dealing 7 (1d8 + 3) slashing damage plus 4 (1d8) necrotic damage.
Dungeon Master's Guide (2014), p. 164