system
Given the following post, respond as if you're commenting on Reddit:
human
[WH40k] Your Warhammer 40k army models just got Indian in the Cupboard'd

Your grandmother just died and bequeathed you her cupboard. Unaware it's magical and turns plastic toys into real life boyz, you put your entire professionally-painted, $5,000 Warhammer army inside the day before the big tournament. That's when things get weird. But how weird?

How would a WH40k army deal with a much bigger and much less grimdark 21st century Earth?
gpt
So while the original ~~SCP~~ Cupboard brings figures to life, it doesn't seem to have any additional anomalous properties that would allow for warp-related activity.

So it kinda depends on how that plays out.  There is no warp in this universe, or if there is it's much calmer.  You'd see a lot of fireworks, but unless your collection included things like cyclonic torpedos, it's containable.  They're small.

If the Cupboard somehow does allow for 40k-style warp capabilities in 21st century Earth, then fuck, better hope the Space Marines win.  However then you could also use the cupboard to animate some Jedi/Wizards/Gods that might help calm the threat.