Chilling Cloud has 4 components to it: Damage, refresh chill, apply chill, apply damage debuff. Assuming that those 1,212 attacks were 404 full cycles, that would be 808 attacks with the damage and refresh components, and 404 attacks with all 4. (808 * 2) + (404 * 4) = 3,232, and 344/3232 = 0.1064, or about 10.6% proc…
Hmm, good point. It still seems like it grabs more than 15 dudes, so that is indeed worth some more testing. I'll check it out tonight when I get home.