Blutos

Amphibious. Blutos can breathe air and water.

Strange Kuo-toa. Blutos doesn't have Sunlight Sensitivity, Slippery, Otherworldly Perception, or Superior Darkvision.

Fury of the Tides. Once per turn, when Blutos hits a creature with a weapon attack he can choose to push the target 10 ft. away from him. If pushed into an obstacle or another creature, the target takes +3 bludgeoning damage.

Multi-Aura Protection. While Blutos is conscious, he grants all friendly creatures (including him) within 10 ft. a +3 bonus to all saving throws; cannot be grappled or restrained and ignores penalties on movement and attacks while underwater, creatures that were already grappled or restrained when entering the aura can spend 5 ft. of movement to automatically escape nonmagical restraints; and can’t be frightened.

Divine Smite. When Blutos hits with a melee weapon attack, he can expend one spell slot to deal 2d8 extra radiant damage to the target plus 1d8 for each spell level higher than 1st, and plus 1d8 against undead or fiends.

Spellcasting. Blutos is a 10th level Freedom of the Waves Paladin. Its spellcasting ability is Charisma, spell save DC 15, +7 to hit (with spell attacks that he doesn't have). Blutos has following Paladin spells prepared:
1st level (4 slots): Create or Destroy Water, Expeditious Retreat, Purify Food and Drink, Shield of Faith, Thunderous Smite, Wrathful Smite
2st level (3 slots): Augury, Find Steed, Lesser Restoration, Misty Step
3st level (2 slots): Blinding Smite, Call Lightning, Freedom of the Waves

Multiattack. Blutos makes two attacks with his Trident.

Trident, +1. Melee Weapon Attack: +9 to hit, reach of 5 ft., one target. Hit: 8 (1d6 + 5) piercing damage. 

Divine Sense(4/long rest). As an action, Blutos can detect good and evil. Until the end of his next turn he senses anything affected by the hallow spell or know the location of any celestial, fiend, undead within 60 ft. that is not behind total cover. 

Lay on Hands (50/long rest). Blutos has a pool of healing power that can restore 50 HP, as an action he can touch a creature to restore any number of HP remaining in the pool, or 5 HP to either cure a disease or neutralize a poison affecting the creature.

Expeditious Retreat, Shield of Faith, Thunderous Smite, Wrathful Smite, Misty Step, Blinding Smite

Oceans' Endurance(4/long rest). When Blutos takes damage, he can use his reaction to reduce the damage taken by 1d12+4.