I've seen the trailers for the other dorms and I've thought of this:

The mirror shows an image of the Deathly Hallows pendent interlaced with a skeletal hand. It then changes to the Mortishackle dorm with Hazel, Grim, Selina, and Teddy there.

Hazel Potter(Mortishackle Founder and Dorm Head): Remember not to tempt or play with fate, or you could pay a steep price for it. That's Mortishackle's creed.

Grim: The Great Seven may be strong, but we represent the one who collects all equally. Heeheheh...

Selina Kama: Respect those who came before you, and they'll give you good fortune, even from the grave.

Teddy: The ghosts here like to socialize and they are much more 'lively'!

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What do you think, and for the last part Teddy says?

plz comment and stay safe!