In 5e, I created weapons that would grow as characters got more powerful, as this fit my Oriental Campaign at the time (Jade Regent). It makes more sense in a society that sees looting the dead as sacrilegious to the extreme. You can find all the examples here, but they are similar to Legacy Weapons from 3e. In Season of the Ghost, I introduced a lighter version of the concept and created magic items that would automatically progress as the PC gained levels. The PC can still customise the runes on the item, but can’t pre-emptively upgrade any of the following. This represents the item spirit becoming more powerful as the hero does.
