"My brother, Loki, has made his way to Midgard. He has managed to conceal himself from Heimdall. Without this Sight, it is possible that Loki could cause much chaos." Thor looks serious. "I have hard the reports on what you are able to do concerning the spirits of the deceased. While the energies my brother's magic gives out are not the same, I believe they are not so dissimilar that they could not be tracked via your equipment."