Special Summon 1 Nordic monster from your Deck, but you cannot Special Summon monsters from the Extra Deck, except Aesir monsters, while that monster is face-up on the field. You can banish this card from your GY; add 1 Nordic monster from your Deck to your hand, then shuffle 1 card from your hand into the Deck. You can only use 1 Nordic Relic Hlidskjalf effect per turn, and only once that turn.