I farmed 450 Kirac Divination Missions and you will too.

I had set out to do something fun that became available in 3.21 when the Explorer Scouting Reports received a functional change. They went from forcing one of the resulting maps to be an uncompleted map to all of the maps. With this I had the fun idea to farm crimson temple, defiled cathedral, and crimson township exclusively through kirac missions. I completed crimson township fairly early due to it having a weaker card pool however. I would target the missions "Drops a full stack of divination cards" in hopes of hitting high value cards such as enlightened, seven years bad luck, or even dream of a mageblood from the apothecary.

I fresh started CSC a little under a week ago with this goal in mind and began grinding kirac missions using a wandering path boss rush strategy bouncing between coves + racecourse, toxic sewer + city square, and cemetery + arcade due to their short layouts. I played a humble flicker strike raider on a low budget early on supplemented by glacial hammer for void stone encounters. Later on I would progress to pure flicker and further from that into soulthirst to speed up the farming process.

Below are my results. Bare in mind there are only 438 results because frankly I didn't do a good job record keeping and I'm sure I missed some of the more common results until I fixed my system later on.
Kirac Divination Farm (Full Sets from the Mission)

Blazing Fire: 126
Journalist : 124
Opulent : 71
Gambler : 56
Lingering Remnant : 25
The Realm : 8
The Innocent : 6
Lachrymal Necrosis : 6
The Enlightened : 4
Tinkerer's Table : 3
Encroaching Dark : 3
Lord of Celebration: 2
Seven Years Bad Luck : 1
The Life Thief : 1

THE APOTHECARY : 2

Shout out to Kirac technicians

I wore 2 pariah rings, goldwyrm, and a bisco's collar since I would be killing all of the monsters inside the crimson maps I figured I might as well wear some quantity for natural drops. I ended up dropping 1 life thief and 1 enlightened across 450 fully cleared maps with Kirac passives. I would highly recommend to just get the stack of cards from the mission and dip instead of full clearing like I did.
Admittedly my data sample is very small but something I did find interesting is how "common" some of the rare cards were relative to normal divination distribution. I imagine if you pick up every blazing fire or opulent for instance you'll have hundreds of them for every enlightened, seven years, or life thief. In this case however I had 130~ of the individual common cards to 6 rare cards.

You cannot currently uncomplete maps off the atlas to enable this strategy to target farm a specific tile set but I believe that this is a great strategy to employ even without explorer rerolls. You would just use any scouting report you can muster and search for high value maps with divination missions. The one I would recommend the most is Maze or Vaal pyramid for Unrequited Love due to Kirac missions seemingly not caring about stack size just individual card rarity.

If you have any questions you can feel free to leave a comment, send a pm, or drop by twitch.tv/simplyvizniz and I would be more than happy to assist.

Here are the moments when greatness happened if you wish to hear me geek out. They may be loud.

https://www.twitch.tv/simplyvizniz/clip/RelievedBlindingRutabagaPupper-x_fzSVDaZLYyPazv?filter=clips&range=7d&sort=time

https://www.twitch.tv/simplyvizniz/clip/HappyPiliableHornetMrDestructoid-IRz0d9qdE_PCDDOx?filter=clips&range=7d&sort=time