Amphibious. The priest can breathe air and water.
Multiattack. The priest makes two Thunderous Touch or Thunderbolt attacks.
Thunderous Touch. Melee Spell Attack: +5 to hit, reach 5 ft., one target. Hit: 27 (5d10) thunder damage.
Thunderbolt. Ranged Spell Attack: +5 to hit, range 60 ft., one target. Hit: 11 (2d10) lightning damage plus 11 (2d10) thunder damage, and the target is knocked prone.
Spellcasting. The priest casts one of the following spells, requiring no material components and using Wisdom as the spellcasting ability (spell save DC 13):
At will: command, create or destroy waterVoice of the Kraken (Recharges after a Short or Long Rest). A kraken speaks through the priest with a thunderous voice audible within 300 feet. Creatures of the priest's choice that can hear the kraken's words (which are spoken in Abyssal, Infernal, or Primordial) must succeed on a DC 14 Wisdom saving throw or be frightened of the priest for 1 minute. A frightened target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.