Your Body has been empowered by Magic making you an unstoppable force of rage. Maybe you drunk a strange potion, or you volunteered to a mage to be his experiment as they tried out a new spell. The result is that your body has become reinforced by magic.

As you rage the magic spills forth wreaking havoc upon your enemies.

Your spell casting ability is constitution.
Your spells save is 8+your constitution modifier+your proficiency bonus.

Magic Resonating Body

Starting when you choose this path at 3rd level, when you enter a rage All creatures within 10 ft take 1d10+(your con modifier+your proficiency bonus) force damage as your rage explodes.

Resonating reaction
if you are hit by a ranged spell attack within 60ft you can use your reaction to do (Your con modifier, minimum of 1)d10 of force damage to the spell caster. you can use this ability a number of times equal to your con modifier(minimum of 1). Expended uses restore on a long rest.

Resonating Shockwave
While are raging At fifth level you can send a wave of power outward in a straight line for 80ft. Each creature in the line must make a Dexterity saving throw. A creature takes 6d6 Force damage on a failed save, or half as much damage on a successful one. You can use this ability a number of time equal to your con (minimum of 1) modifier per long rest.

Limitless Body

Beginning at 6th level, you gain the following abilities depending on your constitution modifier.

Constitution modifier / effect
1 - You can't be poisoned, blinded or deafened.
2 - You can spend your bonus action to channel your power into your legs to Triple your jump distance for 1 minute. you can use this ability a number of times equal to your proficiency bonus.
3 - You can't be charmed, frightened or stunned while raging. if you are already suffering from these conditions the effect ends.
4 - You have advantage on saving throws against being restrained, petrified. If you would be knocked prone by an enemies effect roll a Constitution saving throw against a dc of 10 + (the level of the spell cast if magic, if not magic then plus one).
5 - Your body becomes timeless. it can't be affected by magic which alters your age. you are now immune to poison damage and diseases.
6 - Your body becomes resistant to all damage while you are raging.
7 - Mental wall: If you are forced to make a Intelligence or wisdom save by an enemy you can see and are successful, as a bonus action on your turn you can have the caster suffer 7d6 psychic damage.

Arcane Regeneration

Beginning at 10th level, Whenever you receive healing from a magical source you may add 1d12 plus your constitution modifier.

Warding body

At 14th level your body becomes a shield against magic.

Warding Body
As a bonus action a sphere of Energy radiates from you, distorting and diffusing magical energy within 30 feet of you. Until the effect ends, the sphere moves with you, centered on you. For the duration, each friendly creature in the area (including you) has advantage on saving throws against spells and other magical effects.

Additionally, when an affected creature succeeds on a saving throw made against a spell or magical effect that allows it to make a saving throw to take only half damage, it instead takes no damage if it succeeds on the saving throws.

This ability can only be used once per long rest. It lasts for a number of turns equal to your Constitution Modifier (minimum of 1) .