Build links depending on which site you like:

https://pobb.in/KIoNzsbNAD2z

https://maxroll.gg/poe2/planner/6n2iy0jz

This this has been an absolute treat to put together and uses some pretty interesting weapon swap curse tech to allow instant armour-breaks and Battershout explosions to mass clear dense content along with Warbringer's Warcaller's Bellow. In 0.20 Vulnerability got a stealth change from ignoring armour to instead removing armour down to a minimum of 0, but not below, much like elemental penetration. This means that any amount of armour-break will instantly break a monster's armour, which we achieve with Splinter on Seismic Cry.

The issue is that because the armour has essentially been brought down to zero, when we trigger Battershout it also does zero damage, because the amount of armour broken is also essentially zero. We get around this by setting a Blasphemy Vulnerability setup to set armour to zero and then break it, then weapon swap to a second warcry setup to actually trigger Battershout, while keeping the full total of what the armour break should've been. This allows progressively scaling damage that keeps up with content; i.e the tougher the enemy, the more armour we can explode off of them, and the more hp the enemy, the stronger the Warcaller's Bellow explosions.

Defenses are shored up with 88% Turtle Charm Svalinn block, a 4k combined pool, around 9k armour, solidly quick ES recharge and ES on block, and a glut of life on kill.