Yomi Pretender design and general MP Strategy ?

[FAJ]

Maybe I am thinking of a different spell.

I am thinking of the ethereal samurai dude. I like them as thugs because I don't really have to equip them. They hold up enemies so my Dai Oni don't come into contact with anyone before they are done casting their buffs. They stop casting buffs when they come into contact with even chaff troops.

That, and they are undead, so darkness won't affect them.