Does Malevolence need an ethereal ghost that is manifested as opposed to a non-ethereal ghost? Is it possible to un-ethereal a ghost? I thought it's always ethereal, and incorporeal too when manifested only.
Is this a case of bad wording or errata or type-error?
Once per round, an ethereal ghost can merge its body with a creature on the Material Plane. This ability is similar to a magic jar spell (caster level 10th or the ghost’s Hit Dice, whichever is higher), except that it does not require a receptacle. To use this ability, the ghost must be manifested and it must try move into the target’s space;
This question was in relation to Can multiple ghosts use Malevolence on one creature?