Fafnir (Marvel Comics) entities is stopped when Thor agrees to go to Hel's realm willingly. Fafnir later reappears in the 2011 limited series "Avengers Prime" in the aftermath of the "Siege" storyline as, at first, an adversary then ally of Thor, Tony Stark and Steve Rogers with several legions of ogres and elves in battle against a Twilight Sword wielding Hela and her army. Fafnir was originally a normal man until transformed by the properties of a magical pool into a large dragon. Fafnir retains his intellect and speech, possesses superhuman strength and durability, and the ability to breathe fire and cast illusions.
Sacred trees and groves in Germanic paganism and mythology abode of gods and spirits. Scholars presume that publicly revered trees such as that at the temple in Uppsala were regarded as counterparts to the mythic world tree Yggdrasil. The present section divides particularly notable examples into texts discussing the religious activities of the ancient Germanic peoples involving trees and groves ("Germanic paganism") and their appearance in the myths of the Germanic peoples, particularly the North Germanic peoples ("Germanic mythology"). Sacred trees and groves are mentioned throughout the history of the ancient Germanic peoples, from their earliest attestations among Roman scribes to references made by medieval monks. In Norse mythology,