Magic Mouth Spell

[Bregga]

Can the Magic Mouth Spell activate if the thief is in stealth mode?
I know it states that it does not activate in magical darkness or if someone in invisible but it does not mention stealth. I am a DM pondering this question (yes I used DM but I am to old to change that habit).

[Claxon]

It would depend on what the trigger condition for the Magic Mouth is.

It's also worth noting that without something to provide you cover/concealment from the position of the magic mouth you cannot use stealth against it.

[Bregga]

So you think hide in plain sight the magic mouth would defeat it? As we all know with the right items a good dex and a nice roll stealth can get almost impossible I am just wondering if this spell is a loophole and if it is does that not give this spell a lot of power for a low level spell. Mages would easily be alerted to the presence of thieves even if they could not see them themselves.

[tonyz]

Generally, magic mouth doesn't have any special sensory qualities -- it won't trigger off invisible stuff, or things (like alignment) which are not visible to normal sense. I'd say a thief could stealth past one of them. Now, if the mouth goes off when something touches it, that's a different story.