Blighted Folk

By some method your character is forced to use 1 set of padded armor. They are unable to use any other armor (if they got the padded armor). In exchange they can level up to make the cursed armor stronger. In addition the fighter can cast a certain amount of spells depending on the cursed armor's level.

(To make sure this isnt seen as being too similar to circle of spores druid this is a PYHSCIAL SUIT OF ARMOR that your character is forced to WEAR which is different from spores that are FLOATING AROUND the character)
(You gain your features at level 3, 7, 10, 15, and 18)

 

 

Very Strong Armor

Gives +2 AC while wearing the armor

Self Moving Armor

The armor evolves to have some mind of its own and a small level of precognition allowing you to dodge 1 attack that might have hit and giving enemy's a -2 to hit until your next turn for the price of your action surge

Magical Benefits

The very magical armor gives you some magical abilities and makes you able to cast a single level 1 spell per long rest as a action.

Vanishing Armor

The armor can vanish and reequip itself to you at will. This causes 0 noise. You do lose the powers of the armor while its off.

A Second Self

The armor becomes a secondary being completely subservient to your will. You can now take off the armor and have act as a 2nd version of you with it gaining all of your stats but in exchange you lose the benefits of the armor while its off. Costs your action.

Enhanced Power

With the magical power of the suit at maximum capacity it begins to seep into your very body. You roll a extra d10 to any strength check or damage roll.