I was looking at Echoforge, and with the Shaper of Flames node + Blackflame I am feeling some potential with Shock + Ignites + Poison + Profane bloom. Chose Viper strike as its the only attack that poisons and works with a sword.

This is not a complete build or anything of the sort, just theorycrafting. If anyone else has good ideas that might help this work I'd love to hear it! :)

I imagine we probably want Withering step and chaos resistance curses so I picked up +1 curse on the tree as well.

Very Very rough POB: https://pastebin.com/Lj0Je0Qs

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https://poedb.tw/us/Echoforge

https://poedb.tw/us/Blackflame

https://poedb.tw/us/Bereks_Respite