Quick demo of a build that uses a 97% quality Phantasmal Flameblast in a T14 Burial Chambers. At 97% quality, the first stage gets +48 radius, but each additional stage is 48% less AoE. This makes it very nice for clearing, but awful for bosses. For bossing, we use a second Vaal Flameblast that's normal quality.

The build needs a few more levels to get some extra life wheels and a few simple item tweaks to get some more survivability. Currently the DPS is about 3.5mil (Shaper) DPS with a 10 stack Flameblast, or 5.5mil DPS with the Vaal Flameblast. The regular Phantasmal Flameblast sits around 215k Shaper DPS at 1 stage, which is enough for clearing.

The build is fun, clears fast, and so far isn't dying a crazy amount despite the lack of HP, but without fixing that, it'll get more frustrating beyond level 90. The gear in the video is pretty high end for DPS, with probably about 25-30ex of gear:

• Cane of Kulemak with Fire DoT + Support Gems + Cast Speed: 50c + 2-3ex to 6L
• Gloves with life/res/suppress: 2ex
• Boots with MS/life/res/suppress: 5ex
• Skin of the Lords 2R2G2B with Iron Reflexes: 3ex
• Ashes of the Stars: 1ex (missing a better anoint currently)
• Jewels with Fire DoT Multi + Faster Ignites + DoT Multi: 2-3ex
• Gems: 10-15ex (awakened gems; level 4 Empower; level 4 Enhance; can drop the awakened versions and switch to level 3 Empower/Enhance)

Using the Celestial Flameblast MTX in this video, which is pay to lose for this build with this amount of spam preventing seeing anything

PoB Link: https://pobb.in/j73FhvTVWUje

Still need to fix flasks (get a granite instead of a diamond that does nothing for the build) and get the life wheel above Shadow, along with Snowforged.