Only the Dagger of Venom, and it being a dagger, it's not very effective to kill the ghosts. Not even Shar-Teel hits reliably enough with it. Short of Dorn, she's your best option tho.
I've made a special party game so I can make use of all the best items (excluding the harp one) so I should be able to hit the dagger a lot hopefully. But does the Dagger allow saving throws?
The damage of the dagger self doesn't matter, it's only the poison that can hurt the ghosts. What makes Dorn the most effective ghost killer isn't his strength or the 2H sword, it's the THAC0. It tried to attack the ghosts with an assassin and Shar-Teel with Dagger of Venom and neither even landed a single hit in the time Dorn killed the first ghost. It's very tedious. Start with the most eastern ghost, that's the one with Dead Shot. If you lose patience, you got at least the loot you're after.
Comments
I'm looking for items which can kill the Ghost-Knights in BG1 Vanilla.
Save vs death or suffer.