You can also link multiple auras together to make a more complicated condition than a single aura can have. There's a brief overview near the bottom of
Power Auras Classic : WoWInterface Downloads : Buff/Debuff/Spell Mods (and I think an article in the TT here, although I can't seem to find it), but the basic idea is:
- make an aura for your first condition (e.g. 2pcT10 has procced)
- disable this aura, but mouseover it to find out what number the mod assigned it
- make an aura for your second condition (e.g. CotH procced)
- enter the number for that first aura in the box in the top right for your second aura.
Now your second aura will only display when the conditions for both auras are satisfied.
It's a little clumsy, but I believe you can use it to nest quite a few conditions together.