Gameplay video:
Lightning DoT Mage gameplay and build
It’s still a work in progress but going well. The video doesn’t really showcase how Black Hole fits in to manage large groups. Since the video I have found a T6 EDoT staff with crit multi that increased my unbuffed DoT ticks from 40k to 60k, but the items shown in the video should be relatively easy to acquire.
How it works
The build is centered around the Static Ground node for Static Orb, which leaves behind a pool of lightning DoT after each Static Orb Explosion. Lightning flame aura will be up when moving to take care of some of the aggressive trash mobs. Shock can be applied by Focus and Static Orb hits. If you teleport before each engagement, your first (and usually only) Static Orb will be free. Some mana regen on gear helps keep mana full between engagements without stopping to Focus up. Black Hole works well for gathering groups to conserve Static Orb hits and for locking down mobile high HP mobs. For higher HP mobs the DoT from each Static Ground ramps up rapidly with shock applications from successive Static Orb hits or Focus. I tried to take advantage of the shock effectiveness when standing in Static Ground node, but it isn’t really practical so I have moved those points to longer Lightning Aegis duration and shock chance for Static Orb.
I’ll leave rating the build to those with more experience, but it is much stronger than my Glacial Cascade and Fireball characters (based on LizardIRLs build). The damage is good, but you need to learn to manage mana, especially in arena monos.
Itemization
It is built around the Static Orb “Static Ground” node, related lighting DoTs, and some shock. The best way to scale damage is stacking crit multi wherever you can. Adaptive spell damage and Elemental damage over time are the next strongest damage sources.
-In the hat slot you can either go Fractured Crown or a lightning crit multi helm. If you go the Fractured Crown route, mana will become a priority. The mana cost of static orb is quite high and the “damage taken as mana” on the helm compounds the problem in tough maps. Try to get a Fractured Crown with a high %max mana and low % damage as mana. Boardman21 has a video on how to acquire the it. The Focus skill, mana regen on a few pieces, and leveraging the free skill after Teleport help a lot.
-For the relic, the Runic Tome and Rune Quill give equivalent damage from the implicit. Scrying Eye should have been top tier, but unfortunately the implicit does not seem to work for Static Ground.
-Catalyst type does not really matter unless you build into ward without the unique hat.
-An ideal weapon would have crit multi and elemental damage over time prefixes. A good staff can be very good if you can live without the catalyst suffixes. Funny enough, the staff that dropped in that run increased my damage by 50% after crafting crit multi on it.
-Crit Multi can be on weapon, catalyst, relic, hat, amy, and chest.
-Elemental DoT can be on weapon, amy, ring, relic, and belt. Elemental DoT isn’t critical, but it gives more damage per tier than DoT, Lightning Damage, and Spell Damage.
I think it works better with >500 mana, which you can hit with one high tier mana prefix or with idols.
Edit: added planner and a description of how it works