Playing Bloodlines Map in Torment

Now that I failed at leveling up in Bloodlines (http://www.pathofexile.com/forum/view-thread/1189883) and missing only four of the BL packs for the challenge, I got an idea:

Zana lvl 8 offers the BL map mod for 3 ex, which seems a lot.

However, if you play it with a full party, the cost goes down to 0,5 ex per person, which is ok if you want the challenges.

So, I thought about rotating 2 large (shore/courtyard/...) 50% more magic monster maps at a 1 ex entry fee (with close friends preferably).

Would that be worth it? How rare are the rarest BL mods? (personally I'm missing: bearers, keepers, order, voidspawn). How many repeats do you think it takes to encounter one of each?

Thanks in advance :)

If you would like to join in, send me a pm pls.

Good luck everyone :)

Keepers of the Trove is pretty rare - around abouts the same rate as Inner Treasure. You're better off playing actual bloodlines for this one.

Bearers of the Guardian appears a couple times a map

Voidspawn of Abaxoth is usually at least once a map

Order of the Frozen Sky is every couple of maps.

Good luck to you! I've never heard of anyone doing a league challenge this way, I'd be interested if it works out.

Any experienced SC player can easily get 60LVL in HC imo. And that's more than enough to get BL challenges. You don't even need to start mapping, just get to Merc Docks and keep farming it until you get all mods. It took me less than 1 day to complete BL challenge.

Rule Number 1: Most people don't go solo against Dominus in HC, or just pays someone else to kill him.
Rule Number 2: Ignore masters if you're just playing for the challenge.

Now that you know these, you're good to go imo.

Bearers of the Guardian appears almost every time I reset The Catacombs. I dont know why, but they seems to be there almost every time. I was leveling there from level 67 - 72.
Keeper of the Trove is kinda rare, I encountered only a couple in two weeks.
Order of the Frozen Sky is kinda rare in non-map locations, but once you start doing maps they start to appear kinda regularly.
For me, Voidspawn of Abaxoth is the most rare. Encountered only two packs so far.