Nidelia
A Lost Kitty
Alaric quickly appeared in front of Mackenzie, attempting to stop her before she could get into the building, but then that wasn't his prime concern. His eyes went wide as every one of his senses felt like they were on fire and over sensitive to everything, more than normal of course. If he was successful in grabbing Mackenzie he would then move to topple her to the ground along with himself, to avoid both of them being blasted around by the flood of power.
He could tell that it wasn't going to hurt them, but he knew that anyone sensitive to the feeling of the "energy" would definitely be throttled by it, which meant any Supernatural within a next few miles were going to feel it.