Rare 645 Garrison Mission (Highmaul Cache) Exploit

[nhjelle]

I upgraded a few from 645~ to 655 few days ago, and I never got the mission again, it's been almost 2 weeks since I got it last time. I think either you got lucky or there's something else at play here, or well just a troll maybe.

But anyways, I have an OT question, can you kill kargath 15 times on heroic(same week despite being "saved" to him) to trigger the mythic one or 15 times on normal to trigger the heroic one? Though I think I'm missing like 2-3 normal kills for the 15th kill and only imp to kill this week so wondering if I should go and kill the bosses I've already done to trigger this and/or do heroic kargath a few more times.

You can kill the same boss over and over in one lockout and it will count towards the 15 kills.