two words: diminishing returns
let say with 300 you have 90% chance
next +10 gives you +1%
next +10 give you +0.5%
next +10 give you +0.25%
etc
or whatever numbers you want to use.
BUT at the very end leave soem sort of gap so there is NEVER a 100% chance even if your level is 200 and skill is 1k+
|