Base Class: Monk
The Stone Fist is a martial art developed by goliaths for centuries, used for recreational fighting and practical purposes. Their fighting style is less about being swift and being an unstoppable force of strength. Stone fist incorporates strong grappling techniques and hard hitting knuckles. Over the years goliaths have used Stone Fist in tribe held tournaments and making homes. Training takes relentless endurance of the elements and constant pain to harden your body for this fighting style. Goliaths make their homes by constantly hitting sides of mountains until they eventually break the rock down. Being a strong race, goliaths teach all people within their tribe, and if considered to be worthy or are close to the tribe, outsiders are able to be taught by goliaths. Of course with every martial art people can teach themselves, but not every goliath approves of self taught Stone Fist.
Submission
Upon choosing this tradition you gain a +1 to your Constitution and AC. You also gain the ability to do a Submission hold. To do a submission hold you must first grapple a creature, after succeeding a grapple check you may do a submission hold as a bonus action. After an attack roll if you meet their AC or roll higher you do your unarmed damage and a major injury such as a dislocation or breaking of a bone and the creature has disadvantage on all attacks and -1 on attack rolls for the next 3 turns. If your roll is lower than their AC you do half your unarmed damage and a minor injury such as twisting or pulling their limbs and they suffer a -2 on all attacks for the next 3 turns.
Cast Iron Body
As a reaction to any attack made towards you, you may spend two ki points to gain +1 to AC and temporary hit points equal to half your level + wisdom modifier.
Goldeneye
You gain resistance to psychic damage and have advantage on wisdom saving throws. In addition you gain +3 in perception and investigation skill checks.
Diamond is Breakable
You gain advantage on any attack rolls on creatures with an AC of 18 or lower and gain a +3 to any attacks above 18. In addition when succeeding a flurry of blows attack you learn all weaknesses of the creature you attack, if the creature is resistant or immune to bludgeoning or doesn’t have any weakness, you make their weakness bludgeoning and one other damage type of your choice.