When you don't have any amour on you have amour equal to 10+str modifier+con modifier, and whenever an enemy attacks you they will make a con saving throw or they will take 4 fire damage.
For lvl 1 3 5 8 12 16 19: Fire damage will increase by 1 then 2 then 3 then 4 for each time the meet the required lvl for this to activate.

For each lvl adds a plus 1 modifier to str and con.

Does 1d8 attack fire damage to all opponents within a 30 foot radias.

You gain the ability to see dimlight as very light and darkness as dimlight

When using a fire weapon or spell you deal 2+str modifier of damage and when using claws or horns you Deal fire damage instead