Sorcerous Origin: Nereid

Your ancestry bears traces of the fey of the waters. An ancestor may have survived a nereid’s kiss, or been her unwilling guest. Love of water is second nature to you, and those not of the sea often find you cold and distant.

Touched by the Waters

You can speak, read, and write Aquan. Additionally, you gain a swimming speed of 30 feet and can hold your breath for ten minutes before running out of breath.

Slipstream

Starting at 1st level, when you cast a spell of 1st level or higher, your speed increases by 5 feet per level of spell used until the end of your next turn (minimum of 5 feet).

This additional movement grants you the ability to move across any liquid surface-such as water, acid, mud, snow, quicksand, or lava-as if it were harmless solid ground (creatures crossing molten lava can still take damage from the heat).

Drench

At 6th level, you can manipulate the ambient water present in the air. As an action, you can extinguish all nonmagical flames within 30 feet of you. You may use this ability a number of times equal to your Charisma modifier (minimum 1). You regain expended uses when you finish a long rest.

Fleeting Glance

At 6th level, you blend in with the waters around you. While submerged in water, you are heavily obscured to creatures outside of the water and lightly obscured to creatures within the same body of water. While in the rain, you are lightly obscured.

Nereid’s Grace

Starting at 14th level, while using your swim speed, your movement is unaffected by difficult terrain. While you are underwater, spells and magical effects can neither reduce your speed nor cause you to be paralyzed or restrained.

Soul of the Water

At 18th level, you become one with the sea. Your swimming speed increases to 60 feet or becomes equal to your land speed, whichever is higher.

In addition, while it is raining or when you are underwater, you can use your action to become invisible.

You remain invisible until you make an attack, cast a spell, or move out of the water.