Exploding mobs

The first thing I notice about your gear is that the defenses are all over the place. You have an ES helmet, evasion/armour chest, armour gloves and evasion boots. Your skill tree has some ES, a little bit of evasion and no armour. All this adds up to a very patchy defense. You should concentrate on one or two types on your equipment and support them with your skill tree.

If I didn't miss anything, your elemental resistances on merciless work out to 18% lightning, 50% cold and 62% fire. This is also very low, especially the lightning resistance - no wonder you get one-shotted by Piety's lightning attack. You should aim to have 75% resistances. Using Purity of Elements would fix your cold and fire resistances, but you'll need something more to help with the lightning resistance. Consider replacing that coral ring with a topaz one.

Vessel of Vinktar helps some with the lack of lightning resistance, but not all the way. With 55 charges consumed per use I doubt you can keep it up all the time either.

I can't see what's in your passive jewel sockets so maybe those have some additional defensive stats.

Any particular reason you chose that chest? The added lightning damage does not apply to spells and it seriously gimps your lightning resistance. The fact that it also converts some physical damage to lightning really doesn't help your survival. If you took the appropriate measures to cap your lightning resistance despite the handicap on the chest I could see how it would help against physical damage, but right now it's a liability.

Shagreen boots is an oddly low base compared to your other items. The increased evasion roll on them isn't that good either. I guess you have it because of the excellent lightning resistance and movement speed mods?

In general your passive tree looks very spread out, but this is based only on eyeballing the shape. Right now I don't have time to inspect it in detail and see if it could be compacted.

I prefer to use flasks with instant recovery. Then again, my build is ES/life and if my ES is gone and I start losing life it's already time to panic.

I have to run now, will return later to see if I can come up with any more feedback.

Resists are capped. I have no trouble with physical damage because of Lightning Coil armor. I have no trouble with bosses. All gear is about hp. Helmet adds defense to es too. Boots gives to dexterity, but even with other boots its no difference vs elemental damage. Elemental damage is the one that this build can not handle. 6K hp + 1500 es is just not enough to survive one perfect hit. 9k is minimum from what I have observed. Bada_Bing said that in the beginning that amount of hp I have is not enough on boosted maps (I didnt try without alch, but why to play those 20c-1ex maps withtou alch). I just had to confirm that with my own experience. There are needed alternative/different defenses too. Talking about Witch.

Vessel of Vinktar is vs reflect mobs.

Anyway thx for Ur time. Really appreciate that, but this build just can not pass lvl 11 maps safely. I have cleared with no troubles lvl 12 - 15 maps, but elemental damage can one hit kill on full hp and es by occasion. U just can not prepare for that. If U find something, i can try out. Above lvl 11 maps for safely leveling can be played by summoners, damage over time and totem builds. Imho no direct fights to mobs build can go safely on those maps. There is noting to hide behind and seems game is made to force player to use all possible arsenal of defenses.

ps: I have returned back to Call of the Brotherhood. Maybe if mobs are frozen and shattered they wont explode into my face :). Nevertheless changed a bit gem setup with focus on cold. Now will have to take care more of Reflect mobs, but that wont be such a problem I hope; lets see how Vessel of Vinktar gonna work now..

Okay, I can actually see the jewels if I look at the official skill tree. At first I copied it to poeplanner to be able to see total stats. So resists seem to be in order.

What about improving your cast speed to reduce the duration of the cast animation and let you move away sooner? You only have 17% in your skill tree and I can't see any in your gear. The faster casting gem helps, but spell echo actually hurts your mobility. It does let you cast the spell faster when standing still, but you're forced to cast it twice in a row which takes longer than a single cast without the gem. I guess you want to shock the enemies so replacing it with controlled destruction or elemental focus is probably no good. Maybe added lightning damage or lightning penetration?

You could try switching to lightning golem, which also gives increased cast speed.

How much evade chance and physical damage reduction do you have from your evasion and armour?

I made yesterday 32% and no death from exploding mobs. Call of the Brotherhood is the way. Even fast moving mobs get slower and not explode if front of my face. Seems frozen mobs shatter instead of exploding too. Nevertheless I am not playing Arsenal map and Academy with precaution.

I have tried to rise cast speed but there was no real difference. Lightning Penetration is in curse on hit - Conductivity.

I have in fact changed Cast Speed to Elemental Damage, but its slower for bosses and lowering critical chance to 52% included change of Ice golem to Lightning golem. Lets see how its gonna work now.

Evade chance: 17%
Physical damage reduction: 16%

Reflect become issue again. Its like shoot 1x > if ok I got no dmg back I can shoot again otherwise run away, refill hp and mana, shoot again once. Reflect is only one thing I dont like in this game. Only purpose of this is slower gameplay. Reflect has no solution only minimizing reflection by lowering damage output.

ps: even I play game, spend quite a lot cash into game, I am not recommending it to my friends because of reflect.

So 35k dmg with life leech and Call of the Brotherhood make leveling possible again.