As of 25/10/2016, after testing more than 30 runs & introducing Pets in the following setup, there seems to be no more hiccups, no more accidents, no more scary finish in any lava Isle 3 attempts. Good luck people

All heroes must be evo 160+, Ghoulem more than 180 & 8/10 or more. At spot 1, Ghoulem needs to be 9/10 minimum. All needs to have "Revive" crests, except, at spot 4 Ghoulem needs "Revite"(you may swap & try), at spot 2 & spot 4 Pumpkin needs "Revite" crests(if don't have Talent) All needs Victors Emblem artifact, except 1 in each team needs Eye of Garuda. Don't give Garuda to PK. Pumpkin needs to have Blitz. Almost all heroes, except SK can be swapped between places & spot 1 can't have Pumpkin or Tree. Better to target reaching 10k power for each team to taste least failures. We ourselves were not even fit for Lava Isle 2 runs. Then we started preparing for Lava Isle 3. It took almost 1 month. But when we started it was just awesome.

*NOTE*:

UPDATE 08/09/2016:

Videos of our runs (14.09.2016):

Ok, here is how we are doing Lava Isle 3 for a little more than last 1 month. The following setup let us win almost 100% runs. Well the "almost" part remains until there is some protection against deflect damage. We failed 1 run in last 10 days because my evo 200 PK died thrice in the beginning of the run :| So keep in mind that mishaps even if rare may happen.The idea of sharing this is to enable more people without rare heroes do the runs with some time & effort. So hope sooner or later more teams can grow, lessen discord inside guilds due to inability of taking part in LI3 & increase chances to do public runs like Mesa.Ghoulem, PD, Cupid(better if revite 5), Grizzly Reaper, Santa Boom, Treantaur, Aries(better revite 5 & 8/10 or more), PK(must), SKGhoulem: 8/10PK: 7/10Tree: 8/10PD: 9/10Cupid: 9/10Others can be anywhere from 5/10 or above.All can be usedUnicorn on only Spot 1(This is a must, not optional). Owls(Aviar) must be use by all 4 participants.Since I never ran in one, I am not sure how Arctica teams do perform, but with this you can actually get 100% success rate if you can rule out the rare(extremely rare) death of a necessary hero just before proccing or from out of the blue agro as pure accidents. Those incidents get near absent when the 4 person team improves their individual heroes, almost as we saw when we started Mesa at low might.From my observations through the newer teams in my guild, if you feel like the corner heroes dying too fast from Vlad/BT/CC proc, put Revite crests on both Spot 2 & Spot 4 Ghoulems(at least Revite 3 crest set). It will definitely solve that issue.The setup was almost entirely copied from what my old guild buddies,bro ran. But it is adjusted according to our needs.I will answer any question regarding this & will try to modify the content if I find anything relevant.Because there is a chance that you may still win the run if 1 PK dies & 4 heroes with Garuda survives.Because Unicorn, same as any debuffer like Grim, Pixie or Arc, will let your heroes kill the East Demon too fast. Your teams will split & some will go to North Demon, which in this case will not be almost dead, & it will most likely proc & kill a few heroes. With a little lack of favour from luck, runs will fail frequently. If the Unicorn is in Spot 1, it doesn't stop the East Demon from proccing once, giving our heroes enough time to almost/fully kill the North Demon from afar.We had good success with 1 5/5 revite val in place of 1 Cupid, we used it at "Spot 4"A different team in my guild running successfully with unevolved SK (22.09.2016)Images of our teams on day 2 or 3 after we started: