Armor Class 14 (natural armor)
Hit Points 71 (11d8 + 22)
Speed 30 ft., swim 40 ft.
Saving Throws WIS +6
Skills Insight +6, Perception +6
Senses darkvision 120 ft., passive Perception 16
Languages Sahuagin
Challenge 5
Blood Frenzy. The high priestess has advantage on melee attack rolls against any creature that doesn't have all its hit points.
Limited Amphibiousness. The high priestess can breathe air and water, but she needs to be submerged at least once every 4 hours to avoid suffocating.
Shark Telepathy. The high priestess can magically command any shark within 120 feet of her, using a limited telepathy.
Multiattack. The high priestess makes two attacks with her toothsome staff, or one attack with her bite and one with her claws.
Toothsome Staff. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 11 (2d8 + 2) piercing damage.
Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 4 (1d4 + 2) piercing damage.
Claws. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 4 (1d4 + 2) slashing damage.
GoS, p. 251