Steely_Dan
First Post
And neither of those is very balanced. If +X items exist at any level commonality even remotely similar to prior editions of D&D, they have to be built into the math or it will break. Stat increases that may or may not happen are in the same category.
They will be as common as the DM chooses as they are completely optional, and they stated capping them at +3, so a +1 longsword would be huge, as it should be.