McGuffin idea thread

>>54482932
>A portable hole that, when placed against a surface, allows you to cross through the surface as if a window has just been opened. The catch? It actually sends you through to a parallel universe every time you do it, where things are subtly different and the effect magnifies with each usage.

>>54482932
>Magic swords that raises as undead all it's previous owners to fight for you
>A sapient telepathic wizard hat ready to share arcane knowledge with anyone wearing it, slowly overtakes the mind of it's owners

What's that GURPS(?) Item that people believe displays images of the future but actually what it does is actively change history to reach the worst possible outcome or something?

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>>54483059
There is one that comes to mind.

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>>54483059
Holy shit that's awesome

>>54482932

The whole point of a macguffin is that it's not important what it does, just that everyone in the story desperately wants to get hold of it.

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>>54483059
Here you go buddy.

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>>54490235
2 powerful
plz nerf

>>54490235
>worst possible outcome
>implying the British didn't want the Japs to attack U.S., to draw them into the war
>implying that fuck up didn't all but win the war for them.

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>>54483059
>>54490235
GURPS has a lot of neat magical items.

http://basement.warehouse23.com/ And this is a cool item generator.

>>54490358
It doesn't choose the worst possible outcome, it chooses the outcome the user most wants to not hear. The fact that the thing they were dreading turned out to be a good thing for them is irrelevant