Path of the Ill-Witted

The Path of the Ill-Witted fits with the barbarian that relies on brute instead of brains. Paired with a low intelligence will create a very powerfully stupid warrior in battle. Being stupid has its benefits when fighting, as you are not concerned with strategy or proper fighting techniques. You are a warrior that disregards mental capacity in replace of strength. Over the course of your mindless journey, you will soon become to empty minded that any damage of the sort will simply bounce off with no repercussion. 

You are quit dumb and tend to stumble into certain scenarios that you should not be, but in return, you gain experience in strange new abilities that don't quite belong to any class. 

Braun over Brains

Starting at level three you recognize your own stupidity. The journey you've made so far has given you the gift of blind strength. You can now add a d4 to every damage roll equal to your intelligence modifier. 

You never learned the right way to hold any weapon unless you experienced it yourself, you are proficient in every weapon type.

Blank Mind

You are so dumb that you have inadvertently started a path down a  wiser road. You now have advantage on wisdom saving throws.

Since your mind is so blank you can hold more attuned items at once. You can attune to 5 Items at once now. You are also considered a spell caster if an item requires that.

Mind Tap

Starting at level 10 you have made strange advances in the ways of a mindless rage-machine, accidentally tapping into the fabric of reality. Magic has seeped into your mind and taken hold allowing you to cast a small number of spells, you know 2 cantrips and 5 spells, up to your current level. You spell slots are equal to your dexterity modifier. 

Your save DC is 10 + your constitution and proficiency modifier. 

(Brain) Size Doesn't Matter

Starting at level 14  you add 2x your strength modifier to all damage. 

You are now also immune to psychic damage and can retaliate when attacked with psychic damage and send it back to the caster. They must make a Wisdom saving throw equal to their spell save DC or the spell affects them instead. You can use this up to your constitution modifier per day.