Large Celestial (Angel), Lawful Good
Armor Class 19 Initiative +10 (20) Hit Points 262 (21d10 + 147) Speed 40 ft., Fly 120 ft. (hover)
Saving Throws Str +12, Dex +5, Con +12, Int +4, Wis +11, Cha +12
Skills Perception +11
Damage Resistances Radiant
Damage Immunities Charmed, Exhaustion, Frightened
Senses Truesight 120 ft.; Passive Perception 21
Languages All; telepathy 120 ft.
Challenge Rating 16
The planetar knows if it hears a lie.
If the planetar dies outside Mount Celestia, its body disappears, and it gains a new body instantly, reviving with all its Hit Points somewhere in Mount Celestia.
The planetar has Advantage on saving throws against spells and other magical effects.
The planetar makes three Radiant Sword attacks or uses Holy Burst twice.
Melee Attack Roll: +12, reach 10 ft. Hit: 14 (2d6 + 7) Slashing damage plus 18 (4d8) Radiant damage.
Dexterity Saving Throw: DC 20, each enemy in a 20-foot-radius Sphere centered on a point the planetar can see within 120 feet. Failure: 24 (7d6) Radiant damage. Success: Half damage.
The planetar casts one of the following spells, requiring no Material components and using Charisma as spellcasting ability (spell save DC 20):
At Will: Detect Evil and Good
1/Day Each: Commune, Control Weather, Dispel Evil and Good, Raise Dead
The planetar casts Cure Wounds, Invisibility, Lesser Restoration, or Remove Curse, using the same spellcasting ability as Spellcasting.