Amphibious: You can breathe water as well as air, though breathing air is uncomfortable for you without assistance.
Powerful Build: You count as one size larger when determining your carrying capacity and the weight you can push, drag, or lift. (Pushing/Dragging 482 lbs.) (Lifting 242 lbs.)
Deductive: You have proficiency in the Investigation skill.
Aqua Suit: Filled with Poseidon Solution, in order to breathe comfortably. Also provides fire-resistance and life-support.
Divine Sense: Until end of your next turn, know the location of any celestial, fiend, or undead within 60 feet of you that is not behind total cover. Within the same radius, also detect the presence of any place or object that has been consecrated or desecrated.
Lay on Hands: Have a pool of healing power that replenishes after a long rest. Can restore a total number of hit points equal to your paladin level x 5. As an action, you can touch a creature and draw power from the pool to restore a number of hit points to that creature, up to the maximum amount remaining in your pool. Can expend 5 hit points from your pool of healing to cure the target of one disease or neutralize one poison affecting it.
Fighting Style:
Blessed Warrior: You learn two cantrips of your choice from the cleric spell list. They count as paladin spells for you, and Charisma is your spellcasting ability for them. Whenever you gain a level in this class, you can replace one of these cantrips with another cantrip from the cleric spell list.
Divine Smite: When you hit a creature with a melee weapon attack, you can expend one spell slot to deal radiant damage to the target, in addition to the weapon's damage. The extra damage is 2d8 for a 1st-level spell slot, plus 1d8 for each spell level higher than 1st. The damage increases by 1d8 if the target is an undead or a fiend.
Divine Health: Makes you immune to disease.
Extra Attack: You can attack twice, instead of once, whenever you take the Attack action on your turn.
Aura of Protection: Whenever you or a friendly creature within 10 feet of you must make a saving throw, the creature gains a bonus to the saving throw equal to your Charisma modifier. You must be conscious to grant this bonus.
Sacred Oath: Oathbreaker
Control Undead: As an action, you target one undead creature you can see within 30 feet of you. The target must make a Wisdom saving throw. On a failed save, the target must obey your commands for the next 24 hours, or until you use this Channel Divinity option again. An undead whose challenge rating is equal to or greater than your paladin level is immune to this effect.
Dreadful Aspect: As an action, you channel the darkest emotions and focus them into a burst of magical menace. Each creature of your choice within 30 feet of you must make a Wisdom saving throw if it can see you. On a failed save, the target is frightened of you for 1 minute. If a creature frightened by this effect ends its turn more than 30 feet away from you, it can attempt another Wisdom saving throw to end the effect on it.
Aura of Hate: You, as well any fiends and undead within 10 feet of you, gain a bonus to melee weapon damage rolls equal to your Charisma modifier (minimum of +1). A creature can benefit from this feature from only one paladin at a time.

Explorer's Pack (Backpack, bedroll, mess kit, tinderbox, 10 torches, 10 days of rations, waterskin & 50 feet of hempen rope)
Antimatter Dagger [Finesse, Light]
Skathári Warclub [Two-handed]
Repulsor Gauntlet [Heavy]
Plasma Tongue [Finesse, Special, Versatile (1d10)]
Shield
Tactical Carbonic Hardsuit
"Holy Object" Poseidon's Trident pendent