If you don't know what the Dead Hand is, here it is.

3175776 Dude, that's creepy. I don't know how they'd react, but it would be pretty damn dark.

3177142 Damn straight. I swear, that THING is bound to fuel nightmares for everyone.

I personally think that they'd go running to Celestia so she could incinerate it. The ponies either run to Celestia for help, or push it off onto the Elements.

3175776

3505138 Yeah, I agree.

3506010 RUUUUUUUUUUUUUUUUNNNNNNN!!!

3177144
Soo true, I swear I had nightmares for years after I faced that thing , I WAS FIVE NITENDO!

3175776

Better yet: drop the Mane 6 into the Shadow Temple. That'll give them nightmares for weeks.

3988680 God dammit, Nintendo!!!

3988838 Oh boy, I can already see the psychological trauma they'll get.

3988838
Why would you do that to them? That place is bad **** scary!
I mean, I was on the verge of wetting myself when I first got to that temple, the music alone could cause dementia.

3989003

Let's also not forget this quote spoken randomly by the temple itself near the beginning:

"Here lies Hyrule's bloody history of greed and hatred"

Plus, Dead Hand lives in the Shadow Temple so that's a good expansion on the idea.

3989080
That is the place all light dies...
Even so, the mane six still may be able to survive....
But just barely.....