I would be interested in this too if it is possible to mod just selected skill items. But if that can't happen,
try some save files. much easier and you will achieve all you hoped for (kind of)
3500% Heath save...
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or maybe try this game save listed a few posts before this one courtesy of dawizard1.
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Your skill can also be effected by some relics on top of it to get 10/5 on some things.