https://youtu.be/fizY50ViDXQ

Begin:

I would like to introduce you two builds, very close due to their mechanics around ailments and Fatal Pact, but at the same time very different. One will be a little later, since it is a little more deep. But now I'm showing "Radioactive Solarfall Build".
Why radioactive? Since the main damage that we will do is poison and bleed DoTs, and when the sun's rays cause these effects this comes to mind first! In fact,it’s more correct to call it "God among Mens DoT Build" or "Universal Build", and that's why.

Passive Synergies: [SKILL TREE CORE]

This build is built on a large number of bundles of major points, each of which interacts not only with one another, but in many ways with each of them. It is worth explaining around this, since gear can vary as much as possible.

1) Gods among Mens (And neighboring points) + Insidious Decay
Not the most obvious, but rather important bunch. The fact is that GaM standardizes ALL of our damage, allowing us to focus independently of gear and spells on material damage and DoTs. In the compartment, as we focus on DoTs, incoming damage is completely irrelevant to us. Thus, Insidious Decay does not give us any minuses, and the neighboring points of GaM (together with GaM) allow us to use ANY spell in the game. In addition, GaM gives + 50% material damage, which significantly enhances poison and bleeding.

2) Fatal Pact + GaM
Generally, the reason for standardization. A small but sufficient number of DoTs that you can “throw” are now easily controlled. In addition to updating your stacks more often with almost any incoming damage, you can also limit your attention to only material resistance so as not to die from your own stacks. Now this is source of the crazy heal that completely makes heal potion senseless to you.
In addition, later it will be understood why it is important to have Poison as one of the DoTs.

3) +Greivous Affliction
Use this and weapon with emerald and ruby in 2-sockets (If you don't want to spend 11 points for Blood Reaper and Blessing of the Jade Legion). Now any spell will apply poison and bleed.

4) Dire Juncture + Fatal Pact
In any case, we need to go in Dire Juncture for +10 negative stack limit. But this ability goes well with our build! Firstly, it will prevent fatal damage, and gives time to recover it with the Pact. Secondly, it slows down the DoTs of the Pact themselves. It goes well with everything.

5) Toxic Emanation + Fatal Pact (+GaM)
Excellent passive ability, which is not that mandatory, but much desired.
The point is how Fatal Pact itself works. Regular spells and attacks apparently give you stacks only when DoT is triggered. This means that for one hit you will receive only one stack (Beyond all other bonuses). There are abilities that have several such initiations, BUT Toxic Emanation is different in that it is not ability. Stack initiation occurs for each unit in the area, and passively. It makes us more tenacious even during stun.
Reminding about GaM, due to the fact that one of the main DoTs is poison, we will recruit from Toxic Emanation even more often.

6) A great investment would be Feast for the Crows (excellent combined with Fatal Pact and our damage), maybe even a Disallowing Vessel, but even Toxic Emanation at your discretion.

Result:

What do we have and for why? We get a unified working build with great survivability, which allows you to choose any optimal spell for a maximum set of stacks. The downside for DPS is that we are limited in stack types. Nevertheless, it still allows melt enemy. In turn, this gives tough survival, comfortable mileage, and a fun visual.

Spells:

In fact, everything is simple here. Of your choice! :D

Weapon-based skills have a certain trick in this assembly, but specifically with this idea they do not particularly make sense. Potentially use abilities that have multiple damage sources (Like surfaces) and many damage ticks per second. In addition, you will have problems with Willpower (although they are solved by two Willpower potions), and this should also make you think (Maybe use the Warlock tree).

Great options would be Solarfall with surface, Tear of Etheliel with periodical damage, Bulwark of Dawn with damage.

Minuses:

So, as I said, the passive tree is involved quite specifically. This makes it possible to develop into an interesting third tier, but at the same time, we have certain problems with resources. To solve them, you have to use 2 Willpower potions instead Healing potions. Survival allows, but nonetheless, it reduces its survival itself.

Leveling:

Leveling is quite simple and elementary without death. Up to level 20 play like usual DoT mage with progress to GaM and Fatal Pact. Then, as soon as a weapon with two sockets appears, simultaneously invest in both this major point. Further go to Dire Juncture and various DoT power-ups. Only after all of this you may go to Toxic Emanation or other options.

Thnx for reading and watching!