Path of the Wildbound

Wildbound warriors are blessed by a spirit animal at birth, and grow up alongside their incorporeal companion. Their bond is so deep that the emotions of one effect the other, and when the Wildbound warrior goes into a rage, their spiritual companion follows suit, gaining all of the power that comes with it. A true dynamic duo, the two of them are a force to be reckoned with on any battlefield.

3rd Level - Wild Spirit Bond

You magically summon a spiritual beast, which draws strength from your bond with nature. The beast is friendly to you and your companions and obeys your commands. The beast uses your Proficiency Bonus (PB) in several places. You also determine the kind of animal the beast is, but it will use the Spiritual Beast stat block. Whatever kind you choose, the beast bares spiritual markings, indicating its mystical origin.

In combat, the beast acts during your turn. It can move and use its reaction on its own, but the only action it takes is the Dodge action, unless you take a Bonus Action on your turn to command it to take another action. That action can be one in its stat block or some other action. You can also sacrifice one of your attacks when you take the Attack Action to command the beast to take the Attack Action. If you are incapacitated, the beast can take any action of its choice, not just Dodge.

If the beast has died within the last hour, you can use your action to touch it and expend a use of Rage. The beast returns to life after 1 minute with all its Hit Points restored. When you finish a Long Rest, you can summon a different spiritual beast. The new beast appears in an unoccupied space within 5 feet of you, and you may choose a new appearance for it. If you already have a beast from this feature, it vanishes when the new beast appears. The beast also vanishes if you die.

Spiritual Beast
Medium beast
Armor Class: 14 + PB (natural armor)
Hit Points: 5 + five times your Barbarian level (the beast has a number of Hit Dice [d8s] equal to your Barbarian level)
Speed: 40 ft., climb 40ft.
STR	DEX	CON	INT	WIS	CHA
16 (+3)	14 (+2)	14 (+2)	8 (−1)	14 (+2)	10 (+0)
Senses: darkvision 60 ft., passive Perception 12
Languages: understands the languages you speak
Rage: Whenever you Rage, the beast Rages as well, and gains all effects your Rage would bestow.
Proficiency Bonus (PB): equals your bonus
Charge: If the beast moves at least 20 feet straight toward a target and then hits it with an attack on the same turn, the target takes an extra 1d6 slashing damage. If the target is a creature, it must succeed on a Strength saving throw of DC 8 + PB + half your Barbarian level (rounded down) or be knocked prone.
Primal Bond: You can add your Proficiency Bonus to any ability check or saving throw that the beast makes.
Actions
Maul. Melee Weapon Attack: 1d20 + beast STR modifier to hit, reach 5 ft., one target. Hit: 1d8 + 2 + PB slashing damage.

3rd Level - Rage Bond

You can only Rage while your Spiritual Bond beast is alive. When you Rage, your beast rages as well, and gains all benefits your Rage would bestow.

6th Level - Well Trained Partner

On any of your turns when your Spiritual Beast doesn’t attack, you can use a Bonus Action to command the beast to take the Dash, Disengage, or Help action on its turn.

In addition, the beast’s attacks now count as magical for the purpose of overcoming resistance and immunity to non-magical attacks and damage.

6th Level - Channel Spiritual Fury

You've learned to channel the fury of your Rage through your Spiritual companion, making them even more formidable. While Raging, your Spiritual Bond beast may use your Strength and/or Dexterity modifier in place of it's own, and it's attacks gain +1 to hit and damage.

10th Level - Spiritual Bond Multiattack

When you command your Spiritual beast to take the Attack action, the beast can make two attacks.

10th Level - Stoic Fury

When you Rage, you may select a damage type other than Force or Psychic. You gain resistance to that type of damage, and your attacks deal +2 damage of that type.

You can select a new type each time you Rage.

14th Level - Untamed Wilds

While Raging, your Spirit Bond beast becomes Large size, gains +5 feet of reach and an additional +1 to hit and damage.

Your Spiritual beast also gains a new Bite attack action.

Bite: Melee Weapon Attack: 1d20 + beast STR modifier to hit, reach 5 ft., one target. Hit: 1d6 + 2 + PB piercing damage. If the target is a creature, it must succeed on a Strength saving throw of DC 12 + half your Barbarian level (rounded down) or become grappled.