Several people wanted me to post my tree (WHICH ISNT OPTIMIZED BTW I SUCK AT THAT) and what I do for essence farming.
The options are: 1. Do it high tier w/eater mobs when you want to play f'real. 2. Pull out 2 WS and just do T9 beach map over and over for ezmode netflix and chill while printing divines.
For sake of argument, let's just assume #2. What I did this weekend with my friend, which we net over 30 divines playing casually ON ESSENCES ONLY and about 30 divines on other misc. things (raw drops, etc) and NOT counting a duped apothecary drop. We only ran T9 beach maps, because we were casual, braindead, and relaxed. We didn't want to stress over anything.
Process is simply alch and go. Use rusted scarabs only. No need to waste money on bigger boys. I bought 300 of each, and they lasted all weekend, and you get sso many scarabs too that I still had over 100 left over at the end of the weekend. I also bought 200 Remnant of Corruptions and made off like a bandit.
1. Alch maps that are safe for you to run.
2. With 5 way map device, run a T9 beach w/Rusted Torment, Ambush, Elder scarab. Add a single sac fragment or another scarab if you want.
3. Select Essence on the map device for 2c cost.
4. I used Remnant of Corruptions only on 5+ essenced mobs. Higher chance for Horror/Insanity/Etc if you do it on RGB ones, but I didn't even bother with that.
5. ???
6. Profit
I've sold a LOT of my essences, but still have quite a lot left. You can see the increase of net worth here, but again bear in mind, we were playing very casually. I have NOT sold any scarabs, and nearly every scarab listed here was earned from this farm except the torment/ambush/elder's which I use.