You have 4 magic charges. Whenever you cast an arcane spell (Warlock Wizard or Sorcerer spell) you can expend magic charges equal to the spell's level to not expend a spellslot. You regain all expended magic charges at dawn.

Your intelligence and charisma both increase by 2.

You cannot be charmed.

You have proficiency in arcana. You can choose to spend double the time copying a spell off of a spellbook or other source to spend half the gold.

You know the thaumaturgy cantrip.

You can choose one cantrip from the warlock sorcerer or wizard spell lists. Intelligence is your spellcasting ability for it.

You can cast detect magic at will. Intelligence is your spellcasting ability for it.

Your claws do 1d4 plus your dexterity mod slashing damage.

You target a creature you can see within 60 feet of you. The target takes 4d6 psychic damage and must make a dc 14 intelligence saving throw. On a successful save the target becomes immune to this attack for 24 hours. On a failed save, the target loses all proficiencies, it can't cast spells, or understand language. If the target's intelligence and charisma scores are above 5, they become 5. For every 5 hours that pass the target can repeat the saving throw, ending the effect on a success. You regain the ability to use this attack at dawn.

You have advantage on attack rolls while submerged in water.

You are immune to the waters of the River Styx, as well as any effect that would steal or modify your memory or detect or read your thoughts.

You can breathe air and water.

Your claws do 1d4 plus your dexterity mod slashing damage and your bite does 1d4 plus your dexterity mod piercing damage.

Your dexterity and intelligence scores both increase by 2.

You have 20 feet of walking and 40 feet of swimming.

You have proficiency in investigation and have advantage on investigation ability checks made to find objects underwater.

You can spend 1 hour conjuring a vessel out of nothing while expending gold. This vessel is imbued with your magic. A small vessel just big enough for yourself and one or two other medium creatures costs 10 gold, a larger vessel big enough to hold multiple large creatures costs 50 gold, and a massive sail ship costs 300 gold. You can utilize lair actions while on your ship. On initiative count 20 (losing initiative ties) you can evoke one of the following effects: The vessel regains 22 hp. A strong wind propels the ship, increasing its speed by 30 until initiative count 20 on the next turn. The air within 60 feet of the ship is filled with a howling wind. Until initiative count 20 on the next round, that area is magical difficult terrain, and when a medium or smaller creature flies into that area or starts its turn flying there, it must make a dc 13 strength saving throw or be knocked prone. You imbue your vessel with you own magical power that creates one or more of the following effects: The ship doesn't sink even if its hull is breached. The ship always stays on course to the destination you name. Creatures you choose aren't discomfited by wind or weather, though this effect doesn't protect against damage. You can also create a spectral ship as big as yourself that flies forwards in a 10 foot wide 50-foot line. All creatures in that radius must make a dc 16 dexterity saving throw. They take 3d6 plus your wisdom mod psychic damage on a failed save, and half that on a successful one. You regain the ability to do this after a long rest.

You know the gust cantrip. You can cast gust of wind twice before a long rest. Wisdom is your spellcasting ability for them.

You target one creature you can see within 60 feet of you. The target must succeed on a dc 13 wisdom saving throw or become frightened for 1 minute. They can repeat the saving throw at the end of their turn, ending the effect on a success. You may use this ability three times before a long rest.

You are proficient with Oars as improvised weapons. If you land an attack with an oar, the target takes an extra 2 necrotic damage.

You have 30 feet of walking speed and 40 feet of swimming speed.

Your wisdom and dexterity both increase by 2.

You know the shape water cantrip. Wisdom is your spellcasting ability for it.

You are proficient in tridents.

Your claws are effective natural weapons. They deal 1d4 slashing damage plus your strength mod

You have four arms and can wield multiple items and use multiple tools etc etc.

Your strength and constitution scores increase by 2.

You have 40 feet of walking speed.

You can use a long sword with one hand but deal damage as if you were wielding it with two hands. You are proficient with longswords.

Your eyes sparkle with opalescent light as you target one creature you can see within 30 feet of you. If the target can see you, it must make a dc 16 wisdom saving throw against your magic or be charmed until the end of your next turn. The charmed target is stunned. If the target's saving throw is successful, they are immune to your gaze for 24 hours. You can use this attack twice before a long rest.

Your strength and dexterity scores increase by 2.

You are immune to being frightened and charmed.

You are proficient in intimidation and stealth.

You have 40 feet of walking speed.