User blog comment:B214/Season 3 discussion/@comment-1359322-20150514172915/@comment-26322543-20150515210205

Well, Loki had Fenrir, weakened or not, his fangs can kill Gods. And since that was the reason the Maou didn't join the fight in the LN it's still valid.

And don't forget it's extremely difficult/rare to forcefully teleport someone. If he could do it and practically seal Loki and Fenrir for a day, that's outstanding actually.