What Hephasto melts ghosts?

This is a hyper specific Warlock post. What stat or aura from a bound Hephasto easily kills ghosts? I’m currently running a bound demon/echoing strike Warlock on console offline with a Ariocs Needle spear. I destroy most everything else in two hits on P4 in Hell but those damn ghosts with physical immune take forever. It’s not easy to see what your bound Hephasto has for abilities on console. Any other advice is appreciated too, but I don’t have a ton of time to farm for the perfect Runeword, etc. thanks in advance!