This mod from Strikor boosts the protective values of resistance artifacts.
Better Artifacts by Strikor
This mod boosts the protective values of resistance artifacts. First-tier artifacts now give +6 rather than +1 and second-tier give +9. This should make equipping these artifacts more appealing. Prices and other artifact benefits are unchanged.
To install, simply extract the gamedata folder to your Clear Sky directory. If you haven't already, open up fsgame.ltx in the same directory with Notepad and make sure
$game_data$ = false| true| $fs_root$| gamedata
is set to
$game_data$ = true| true| $fs_root$| gamedata
Please include credit to me if you use this mod in your own work.