Every time you raise your magical item ability by 1 you get to make a simple contest against the potential limit of the item in question, using your current ability. If you get a Complete Success you master and get fully attuned to the item, effectively raising your ability to the potential limit.
This would make it both exciting and potentially effective to raise the ability. A Complete success would certainly be unlikely when the ability is much lower than the potential limit, but there's always the chance, especially with the help of hero points.
If the GM is feeling generous a partial success might give a smaller bonus to the ability, or the full ability for a short while, or something in between.
Powered by hypermail