Mephistopheles
First Post
An invisible devoted defender could also be some fun (especially when used to protect someone the PCs are after). I can just picture a nervous looking charge, hoping that her bodyguard is still nearby, making the occasional sigh of relief in between being jostled out of the way by an unseen force when someone tries to attack her or having attacks that were surely going to hit her being deflected at the last moment for no apparent reason.