Ok, Focused Accuracy seems to have a -ToHit debuff resistance attached to it. Does anything else? Thanks again! 
7+ year vet with too many alts to list...
Focused Accuracy is the main one, and it provides huge resistance; I can stand in the middle of a bunch of Master Illusionists and their Dark Servants and still not have problems hitting. Combat Training: Offensive for soldiers/widows has tohit resistance, but not as much as FA. The Radial side of Ageless Destiny also provides resistance to all debuffs, starting high and tapering off over its duration as most Destinies do. And of course, yellow inspirations help (if you have /auctionhouse, it's easy to grab large or even Super yellow insps cheap before going into a mission).
Thanks Hopeling! I didn't even think about the /ah trick!
7+ year vet with too many alts to list...
Is there any powerset that provides -ToHit debuff resistance? I did a quick look and couldn't find any. I was soloing through Night Ward and was simply amazed at all the -ToHit that was stacking up on me. It made it actually boring, as fights began taking too long. They couldn't hurt me much, but the same was true of me. I would eventually win the war, but the battles became frustrating after awhile.
Yes, I realize more accuracy would help, as would more DEF to keep the -ToHits from landing. I will be building for that, but I was wondering if there was another approach. Thanks!
7+ year vet with too many alts to list...