I have a great idea for a class/prestige class,but want to use the "Inscribe rune" feat (from PF5) and change him a bit (or a lot) and then write them here/others forums.
how much legal would that be? if i write the class without the feat it wont be understandable in any place expect here.i have also plans to change him,and i guess it depend on how big the change will be.
(*please forgive me for any mistakes in my English.i don't really good at this)