This mission just popped up for me on Live servers and it's the first honor mission I've ever seen. I do have a Gladiator's Sanctum, so I wonder if it's related to that.
Been doing Garrisons for 3 months now. Never seen till today. I recently built the Gladiator's Sanctum. I also have been doing BGs recently. Maybe 1 of them is linked? Or just bad luck with the availability of the mission?
Just had this mission pop up today, been doing Garrison Missions since WoD Launch, never seen this untill now (nor have I ever used the Gladiator's Sanctum) .
I think its maybe because I just did Ashran for the first time last night...
Oddly, I've been getting this mission every day for the last three days on a character with 0 HKs or PvP building in the garrison...
Garrison Timer Mobile App
[Upon completion your 随从 will gain: ]
Missions and Followers math for maximising success chance
Treasure Hunters: Making Gold with Your Garrison [Archive]
Warlords of Draenor Garrison Missions Guide