Just bought a 2H Mace with the Gain Phys as Each Element runesmithing enchantment and wanted to see if I could stun normal Maven. Note that I was able to stun without my Ironwood Tincture or max Endurance charges, and I forgot to swap to Infernal Blow of Immolation. I also have Whispers of Doom anointed for Flammability+Punishment, so it's even easier at low life.

Not sure if I'll be able to stun Ubers without switching from RT to Crit, but I'll try eventually. POB shows MH stun threshold = 0.15 without Tincture and 0.06 with. Average damage on 6 stack explosion is around 7.9 mil with 21/20 Infernal Blow, or 8.7 mil with 20/20 of Immolation.

I could also go for guaranteed double Stun duration by getting 2 Large Clusters with Heavy Hitter (20% chance each), 3 points for Kinetic Impact (10%), and 4 points for Goliath (50%).

https://pobb.in/xSV4OS83QP9V

Passive tree is based off CaptainLance's Berserker and is intended to be more well-rounded. Current investment is around 30-35 div, Mace was 8 div and came with the enchantment.