Armor Class 18 (natural armor)
Hit Points 228 (24d10 + 96)
Speed 30 ft., fly 60 ft.
Skills Arcana +8, History +8, Perception +8, Religion +8
Damage Resistances [object Object]
Damage Immunities psychic
Condition Immunities charmed, frightened
Senses truesight 120 ft., passive Perception 18
Languages understands Common, Sphinx
Challenge 13
Inscrutable. The sphinx is immune to any effect that would sense its emotions or read its thoughts, as well as any divination spell that it refuses. Wisdom (Insight) checks made to ascertain the sphinx's intentions or sincerity have disadvantage.
Magic Weapons. The sphinx's weapon attacks are magical.
Multiattack. The sphinx makes a ram attack and two claw attacks.
Ram. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 17 (3d8 + 4) bludgeoning damage.
Claw. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) slashing damage.
Ram Attack. The sphinx makes one ram attack.
Teleport (Costs 2 Actions). The sphinx magically teleports, along with any equipment it is wearing or carrying, up to 120 feet to an unoccupied space it can see.
PSA, p. 32