When I tried this, all the projectiles were absorbed by the dummy but only 1 damage number resulted (I had a minimally specced skelly mages tree for only cryomages and 100% chance for 3 projectiles.
Ill test it later when I’m on my PC, if this is the case for Pyromancer as well.
If its intended for only 1 projectile to hit, it will hit the build pretty hard e.g. cut the damage down to only 1/3 on single target especially.
From the video, lets say I’m hitting like 6k per projectile on average → 6k x 3 = 18k (after shotugun) from 1 mage → 5 mages = 90k damage per attack (120k-140k with Dreadshade buff I suppose) on single target/bosses. I’d say damage is great but no where near of what other classes can do right now e.g. Rouge or even Lich.