Find the magic sources
Oh dear Celestia there are so many
Discover what’s making all these strong magical frequencies; there are 9 sources currently in the hotel that were detected.
3 of them are either chaos magic or are expelling from a very unstable source, 1 is a strong sort of body modification magic, and the other 5 are yet to be identified beyond existing.
Either you have a bunch of warlock strength unicorns wandering the hotel or somepony thought to collect a bunch of powerful antiques without thinking too hard about it.
One of them might be the ‘luck manipulation’ magic you picked up on earlier.