Where do you get Olroth's Resolve Ultimate Life Flask?

Is it a random drop or some specific boss?
Thanks

Expedition Boss, found in any expedition logbook (i think it must be lvl79+ but not sure)

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Rikku#7536 wrote:

Expedition Boss, found in any expedition logbook (i think it must be lvl79+ but not sure)

I have no idea how that works, i'm on T8 maps atm working through those quests, how do I get an expedition boss?

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ySoCereal#1897 wrote:

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Rikku#7536 wrote:

Expedition Boss, found in any expedition logbook (i think it must be lvl79+ but not sure)

I have no idea how that works, i'm on T8 maps atm working through those quests, how do I get an expedition boss?

Ctrl+U top left expedition league mechanic from poe1, short explanation is:
In maps you make explosions, kills monsters, they have a chance to drop a expedition logbook. This logbook you can open at dannig, and theres about 20% chance for an expedition boss to spawn.

On Atlas you can see expedition mechanic with this little icon




That flask is 40divine tho so i assume drop chance is like 1%, boss spawns every 5th logbook.... so if you want that flask it's probably better to just farm 40div and buy it on trade :D

ok thanks, appreciate the info

Tho not sure how i farm 40 div, played over 150hrs only seen one