Here ya go, I made a scimitar just for you.
Basically, it looks like Belm w/ following properties:
+3 in all regards
+2 bonus to AC when equipped
regen 1 hp every 7 seconds
1 extra attack per round
This is a pretty powerful item, and suggest toning it down. I figured you would have an easier time removing effects over adding them.
Otherwise, you can download this file straight to your override directory, and use Shadow Keeper to add Nature's Fury to your inventory (under swords). The filename I gave it is different than any original game items, so this item doesn't replace any original items.
Scimitar