Way of the flowing fist

You are able to manipulate water to your will you gain abilities that let your attacks flow or freeze like water

Flowing styles

Starting at 3rd level you may enter a flowing stance, when you enter a stance you must choose a style to use you may this stance lasts 1 minute or until you are knocked unconscious 

Boiling.Your unarmed strikes deal an extra 1d6 fire damage, when you reduce a creature to zero hit points you each creature within 10ft of you takes 4 fire damage

Freezing.your unarmed strikes deal an extra 1d6 cold damage, as a bonus action you may spend 1 Ki point to choose a number of creatures up to or equal to your wisdom modifier those creatures gain hit points equal to your wisdom modifier

water manipulation

at level 3, you gain the ability to cast shape water at will

Refined stances

Starting at 6th level, your styles gain these abilities

Boiling.When you reduce a creature to zero hit points, your next unarmed strikes inflicts 4 extra fire damage

Freezing, as a action you may target a creature within 10ft of you, it gains 4 hit points, you can only use this a number of times per short rest equal to your wisdom modifier.

Unruly style

At level 11, you gain the ability to change your flowing style on a whim, as a bonus action you may spend a Ki point to change your Flowing style

Unbreakable ebb

At 17th level you gain the following effects while in one of your stances

Flowing Sheild, your ac increases by 2

Improved control water,You can now manipulate a 10x10x10 foot cube of water with shape water

Rapid Flow,Your movement speed increases by 5ft