I don't see any champ on your roster that is a specialist for Bommal (like Crimson Helm, Samar Gemcursed, Vogoth, Master Butcher).

Wich floor are you talking about, 50 or 90? Maybe you can still beat the floor 50 Bommal if you are fast enough to get only a few Dreadbombs. Rector Drath, Deacon, Peydma and 2 dps champs.

Do you have a Master Butcher (rare, Dwarf) among your champs? His passive can heal your team when the first Dread Bomb explodes, basically a Mini-Vogoth in this fight. He also brings provoke. That doesn't work in this fight, but makes him good for Magma Dragon and Hydra, so he is really worth bringing up. I made a lvl 60 Master Butcher on my account and use him in all 3 mentioned places, a really good rare.

I got Master Butcher in my vault, but not done anything with him, any advice on the gear for him..

The others i do not have.

I saw a  youtube with oddonegaming were he put Lady Annabel and some other dudes up against the Bommal, and they (she) did the job on hard, i have her at lvl 50, I am atm lvl up gear on my Annabel and hope it will cope it.

The Bommal is Floor 50 lvl 185.

If you want to go with Master Butcher, for Bommal you need only res (to resist the normal debuff bombs) and hp on Master Butcher. Bommal is immune to provoke, so in this fight, you don't need acc. I still recommend to build Master Butcher with accuracy, he is quite good in Hydra and Magma Dragon with his provoke.

The whole thing about Master Butcher vs. Bommal is his first passive. When attacked, he heals all allies for the ammount of hp he lost. This skill has a 1 turn cooldown (what is a downside) and it doesn't work vs. bosses. The latter sounds bad at first glance, but is great, because the hits Bommal does by himself do not activate the cooldown. The passive will work, when the Dread Bombs explode, they are minions of the boss, not a boss by themselves.

You have to put him on the last team position! AoE attacks like the Dread Bomb explosion don't do their damage to all team members really "at the same time", but one by one, starting with the team leader. If Master Butcher would be the team leader, he would get the damage first and "heal" his teammembers with his passive before they got any damage.

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You have Deacon Armstrong, Rector Drath and Master Butcher. Rector should be the teamleader for her resistance aura, so you get less debuff bombs over the fight.

The other two teammembers I used, Ghostborn and Occult Brawler, where only here for damage and could be replaced with any champ able to hit hard. Poisons from Occult Brawler didn't even do much, Deacon did nearly the same damage. 

Just one thing to remember: don't reduce the turnmeter of the boss. Everytime you do that, he will place a Dread Bomb. Turn off Deacons A3 skill. He is only here to place leech and decrease def. Be aware, that evil evye mastery on your champs will place a Dread Bomb as well. Don't use this mastery on champs, that are supposed to fight against Bommal.

So i got Rector, Deacon and Butcher, and could replace Occult (i actually got him lvl 50 too) and Ghostborn with Ninja and Septimus...

I will surely give them a try, i got everything to win and nothing to loose :-)

Just a follow up.

I did get through the Dreadhorn today.

Did some level up on Master Butcher and some gear with lvl 12 plus a little masteries.

Did put masteries to lvl 50 on Lady Annabel and did lvl most of my gear to lvl 16 on her, and she beomes a beast on survival.

So ended up with this group.

Rector Drath - Lady Annabel - Ninja - Septimus - Master Butcher

Thx for all your tips and infos 👌

So are up against Dreadhorn again and have "problems"

Are there any advice regarding turning off A1, A2, A3 before you get to him or advice on wich to use first, when you reach him..

@Skadi you gave some ecxellent advice on the Dark Fay matter, any here ??

(are still upgrading some of the gear)