Hey guys just wanted to share a build I've been having fun with this league. With the addition of vaal temptations support, it is possible to spam vaal attack skills with hateforge. To sustain the rage cost, i went with runegraft of the fury for 3 rage per life flask used, and a rage tincture with 100% inc effect for 6 rage on hit. This results in 15 rage(vaal smite costs 15 rage with max rolled hateforge) and allowing me to spam vaal smite. Vaal smite's aoe does not benefit from rage gain on melee hit as it is not a melee hit so solving rage gain was kind of a pain.

With tainted pact + tincture mastery I am able to sustain up to around 500-600 stacks of bloodsoaked blade, resulting in full writhing jar charges every 3sec though this is less of an issue in mapping and definitely not needed for bosses or tough rares.

I initially tried vaal power siphon as it targets every single enemy on the screen(40 worms with mother's embrace) and pairing it with returning projectile, however the damage just does not justify the clunk involved. So I instead went with vaal smite.

POB w/o guard skill - Level 100 Vaal Smite Slayer [3.28]