So Physical "caster" builds:

I was just fooling around a bit with builds for gods like Thor, Loki, Fenrir, (assassin) Ne Zha and so on after reading the patch notes.

And now that they gave Brawler's Beat Stick 40 physical power and 20 penetration I thought going regular Voidblade instead of focused voidblade might be viable.

So something like this:
Warrior Tabi--> Voidblade--> Jotunn's Wrath--> Brawler's Beat Stick--> Titan's Bane--> item X

This will give you 15 protection debuff, 46 flat pen and 33% penetration.

Have not had time to test it out properly though, so if someone wants to help me with testing it out be my guest! =)

By my math (if the % from Titan's Bane is calculated from the protections before the Voidblade debuff) you are going to deal true damage to everyone under 90 physical protection (hunters and mages with no protection items got 70 ish protections).

It might be more viable to just skip Voidblade and get a item with more than 25 physical power, but I'm not sure :P

I want to try this except with adding in executioner in place of the wrath. For a hunter.

You would get 50 flat pen. 15 prot debuff. and 54 percent pen. They could have like 200 pen and you still deal true damage.