Path of Tranquility (DnD-Shorts)

The primal force of Rage is as unwieldy as it is powerful. Warriors who harness it are called barbarians, known for their brutal savagery and blinding fury in battle. In you however, Rage is no master— it is a force under your command. It steadies your mind and enhances your senses. The wisest know well to fear the anger of a gentle soul; yours is the gentle soul they fear. 

Tranquility barbarians are masters of the primal energies that flow through them. Such warriors are focused, calculating, and devastatingly effective in combat, wielding Rage not as a sledgehammer, but as a scalpel. Far from wrathful brutes, they are often eloquent and gentle, but the perceptive might glimpse the fire that smolders behind their eyes. The fury within warriors who walk this path is under control, but remains just as potent as the fire that burns within any barbarian. They are tenacious and brave, speak softly, and carry a very large stick.

Level 3: Tempered Fury

Your rage focuses and fortifies your mind. While raging, you have bonus to Intelligence and Wisdom saving throws equal to your Rage damage bonus.

Level 3: Heightened Instinct

The steely mastery you have cultivated over your own rage makes you more astute than most. You gain proficiency in the Insight and Animal Handling skills, and you can add your Strength modifier to checks you make with those skills.

Level 3: Calculated Aggression

You have the focus to unite ferocity with calculating technique in combat. You learn the Great Weapon Fighting fighting style or another fighting
style of your choice from the Fighter list. You can change your chosen fighting style for another from the Fighter list anytime you level up.

NOTE: Choose Fighting initiate feat (Expanded Rules) and then Great Weapon Fighting in dropdown - there was no other way to add this.

Stalwart

Your unshakable tenacity in combat lends confidence to your companions. Allied creatures within 10 feet of you are immune to the frightened condition.

Level 10: Flow State

Your hyper awareness and mastery of mind and body allows you to enter a trance-like state in battle. When you make an attack roll while raging, you can choose to begin concentrating (as if concentrating on a spell) and enter this flow state, which lasts until your Rage ends or you lose concentration.

While in a flow state, your movement speed increases by 10 feet, you have advantage on Intelligence and Wisdom saving throws, and when you take the Attack action and reduce a creature to 0 hit points, you can immediately use a bonus action to leap up to 30 feet and make a single weapon attack.

Once you enter this flow state, you cannot do so again until you finish a Long Rest.

Level 14: Explosive Strike

Your mastery of the primal fury that dwells within allows you to unleash it at the most devastating moment. Once per turn, when you hit a creature with a weapon attack while raging, you can expend a further use of your rage to deal additional damage to the target equal to your Strength score. You can use this feature a number of times per day equal to half your Strength Modifier (rounded up), regaining all expended uses when you finish a Long Rest.

 NOTE: There is currently no way to key number of uses to half STR modifier. Please note actual number of uses in text.