User blog comment:OverlordRocks/How did the Ninja fight the Ghosts?/@comment-33842457-20160314230412/@comment-27747281-20160314231124

That, too- Whilst they COULD wait for the ghosts to turn momentarily solid, deepstone is much more practical in that it allows them to constantly touch them as much as they want for combat. As for Lloyd's energy, we've established that water and air, stuff like that, can affect ghosts because they're not necessarily solid; similarly, I suppose the same applies to Lloyd's energy blasts, as they seem to be able to fluctuate between solid and more ethereal properties.