Grom can Dash as a Bonus Action and gain 5 Temporary Hit Points. He can use this Orc trait five times per Short or Long Rest.

Grom can enter a Rage as a Bonus Action. While raging, he gains resistance to Bludgeoning, Piercing, and Slashing damage, deals extra damage with Strength-based attacks, and has Advantage on Strength checks and Strength saving throws. His Rage lasts up to 10 minutes and can be extended by attacking, forcing a saving throw, or taking a Bonus Action to maintain it. He can Rage five times per Long Rest.

As part of the Bonus Action used to enter Rage, Grom can move up to half his Speed.

Grom enters a controlled battle trance, gaining the normal benefits of Rage and choosing an animal aspect from Bear, Eagle, or Wolf.

Grom attacks twice with the Attack action. In his modern unarmed discipline, these attacks are represented by powerful strikes, throws, knees, and shoulder checks.

Grom abandons defense for a committed Strength-based attack, gaining Advantage while exposing himself to attacks until his next turn.

Grom adds 1d10 damage to one attack made with Advantage and can impose two different Brutal Strike effects when using Improved Brutal Strike.

Grom uses overwhelming leverage to shove a creature up to 5 feet after hitting it with an unarmed strike, if the creature is no more than one size larger than him.

When reduced to 0 Hit Points but not killed outright, Grom drops to 1 Hit Point instead. He can use this once per Long Rest.

While not wearing armor, Grom's Armor Class equals 10 + his Dexterity modifier + his Constitution modifier. His Unarmored Defense AC is 17 when this Constitution modifier is included, but his listed current AC is 13 using the requested base calculation of 10 + Dexterity modifier without armor.

Grom can use the mastery properties of four kinds of Simple or Martial weapons. He is trained to apply mastery properties through disciplined combat practice, even though his current modern training regimen forbids weapons.

Grom has Advantage on Dexterity saving throws against effects he can see, such as traps and spells. He does not gain this benefit while Blinded, Deafened, or Incapacitated.

Grom gains proficiency in Nature. While raging, he can use Strength instead of the normal ability for Acrobatics, Intimidation, Perception, Stealth, or Survival checks.

Grom follows the Path of the Wild Heart, drawing on the instincts of resilient and predatory animals.

Grom can cast Beast Sense and Speak with Animals as Rituals, using Wisdom as his spellcasting ability for these spells.

Grom gains the Tough feat. His Hit Point maximum increases by an amount equal to twice his level, and it increases by 2 whenever he gains another level.

Grom can attack twice, instead of once, whenever he takes the Attack action on his turn.

Grom's Speed increases by 10 feet while he is not wearing Heavy Armor.

After Grom uses Reckless Attack, he can choose one of the attacks made with Advantage on that turn to deal an extra 1d10 damage. If the attack hits, he can impose one Brutal Strike effect, such as forcing the target to move or reducing its Speed. He cannot use Brutal Strike if the attack has Advantage from another source.

Grom gains the Tavern Brawler feat. His unarmed strikes use a d4 for damage, he can reroll 1s on unarmed strike damage, and when he hits with an unarmed strike he can push the target 5 feet if it is no more than one size larger than him.

Grom gains the Aspect of the Wilds feature and chooses one benefit after a Long Rest. Owl increases the range of his Darkvision to 120 feet or grants Darkvision if he lacks it. Panther grants a Climb Speed equal to his Speed. Salmon grants a Swim Speed equal to his Speed.

Grom has Advantage on Initiative rolls. At the start of the first turn of each combat, he can move up to half his Speed without provoking Opportunity Attacks.

Grom gains the Alert feat. He adds his Proficiency Bonus to Initiative rolls, cannot be Surprised while conscious, and can swap Initiative with a willing ally after Initiative is rolled.

When Grom is reduced to 0 Hit Points while raging and does not die outright, he can make a DC 10 Constitution saving throw. On a success, he drops to a number of Hit Points equal to twice his Barbarian level. The DC increases by 5 after each use until he finishes a Short or Long Rest.

Grom can cast Commune with Nature as a Ritual, using Wisdom as his spellcasting ability.

Savage Attacker. Once per turn when Grom hits a target with a weapon, he can roll the weapon's damage dice twice and use either result. This feature is retained from his Soldier background, though Grom currently fights without weapons and therefore cannot use it unless he later wields one.