Path of the Stone Guardian

Ok guys this is the rough draft for a new subclass I am making for barbarians in my WIP setting for an upcoming campaign. Feedback on how I can improve/better balance this class is not only appreciated but also respectfully requested.

*Any names of abilities contained within this class are strictly WIP and subject to change if you have a suggestion for such a name feel free to let me know.

Embodiment of Stone

3rd-level Path of the Stone Guardian feature

You have begun communing with the earth itself so you can better shield your people from harm. When you reach 3rd level you may choose one of the following options:

Stone's Endurance

You gain resistance to all damage and your movement speed decreases by 5ft while raging, as your body transforms into living stone.

Wrath of the Moutain

You gain advantage on all saving throws made against charm and fear effects while raging, as your body becomes like living stone.

Strength of the Earth

6th-level Path of the Stone Guardian ability

Through your continued communion with the earth itself you have furthered your connection with it. Your maximum lifting capacity is doubled, and you have advantage on Strength checks made to break, push, lift, or pull objects. While raging you also gain the ability to root yourself to the ground.

Might of Stone

6th-level Path of the Stone Guardian ability

Through your connection to the earth you are able to momentarily become one with it. As a bonus action on your turn you can cause your feet to meld with the ground, reducing your movement speed to 0 and making you immune to forced movement until the start of your next turn. You can do this a number of times per day equal to your Constitution modifier. 

In addition, while raging you may make yourself larger (as with the Enlarge/Reduce spell), once you use this ability you can't use it again until you finish a short or long rest.

Protective Fury

10th-level Path of the Stone Guardian ability

Your attunement with the earth grows stronger allowing you to choose one of the following abilities:

Earthen Shield

As you further your connection with the earth, you are gifted with preternatural instincts to protect the weak. When you enter into your rage you may choose a number of allies within 30ft of you equal to your Constitution modifier. These allies gain resistance to all non-magical sources of bludgeoning, piercing, and slashing damage until your rage ends.

Stone's Fury

The earth itself has blessed you with a portion of its own inner rage, for use in striking back at those who harm your allies. While raging, whenever an ally that you can see within 30ft of you is hit with a melee attack. You may use your reaction to call forth the earth's fury against the assailant. Roll a ranged attack with which you are proficient, on a hit they take 3d6 bludgeoning damage as a pillar of stone erupts from beneath their feet.

Allied With the Earth

14th-level Path of the Stone Guardian ability

Your connection with the earth is so complete that you can call on the earth itself to aid you. When you enter your rage you may summon an earth elemental to fight beside you.  It uses the stat block found the Conjure Elemental spell, and fights along side you for an hour or until it is reduced to 0 hit points. Once you have used this ability you may not do so again until you complete either a short rest or a long rest.