I don't know how Loki reversed an entire building falling over though. Due to the nature of Loki's and Sylvie's powers I was spending a lot of time wondering if it would turn out that a large majority of what was happening was secretly an illusion. I'd be pretty disappointed if that was the case though. Maybe he pocketed one of the dozens of Time Stones laying around the TVA...
I've seen a lot of people throwing around a theory about him pocketing a time stone. It was super weird how he made no motion when it was going back up, he just stood there not moving, kinda awkwardly lol. But yeah I've been wondering about that same thing a lot.
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