[Autumn]

Major cases include stuff like

-def/res modifiers:
Geldoren (-10 def/res, 1.5x when crit)
Aerial Razor (-10 def/res, doubled at the end of the line.)
Shatter Beam (3+Terrasq level/5, ends up being -15 def/res at lvl 60 terrasq)

-All Stats
Vamp Shell (-12 ALL stats with one overcharge at max)
All the curses(-12 at rank 3)

+All stats
Death knighting(+10 all stats)
Install(Varies greatly, but can be anywhere from +8 to +15 in varied stats)
Upgrade (For Mechanations, I think +7 all stats or something)
Vamp Shell(+12 all stats, was mentioned before)


I would include rising game, but rising game doesn't +all stats, it's somewhat specific and not that impactful on anything but turn order, due to celerity.

That's about all I've noticed that are major cases, might be best to just go through all the -stat skills in general and tweak them ever so slightly.