So I got 100 Alchemy and I really want to make some power Paralyze, Slow, Fear, and other nasty multi-effect potions. So far, I've found Paralyze can have Fear with it (Useless) and drain Stamina (Also useless), so I was wondering what other effects I can get on there?

Basically, this is what I'm hoping for (I'll do the work for most of these, I'm jwing if anyone knows off of the top of thier head)

-Paralyze + Damage Health
-Paralyze + Weakness to Magic
-Slow + Damage Health + Drain Magic + Ravage Magic (A combination of those, not all 4)
-Fear + Damage Health
-Ravage Health + Ravage Magic
-Ravage Health + Ravage Stamina
-Resist Fire + Resist Magic
-Fortify Light Armor + Fortify One-Handed + Fortify/Restore/Regenerate Health + Fortify/Restore/Regenerate Stamina

I think Canis Root + Imp Stool + River Betty will make [Paralysis + Damage Health] - but I'm not sure how effective it is. I made those ones with my first character but never used them.

Imp stool is the ingredient you will want because it has damage health, paralysis, and linger damage health.

I believe the nastiest potions are imp stools, human flesh, and another ingredient. (of course not counting jarrin root- since even though that doesnt really count someone will mention it for sure)

These are all excellent:
Try canis root imp stool and orange dartwing.
Try deathbell river betty thistle
Try deathbell skeever tail large antlers

And this one is relatively common but effective:
Deathbell red mountain flower and salt.