Dainn, the Herald of Beginning (2-068) [The War of Valhalla]

Resonator : Divine Beast [Continuous] If there are no cards with the word "Yggdrasil" in its name in any field, [Activate] of this card cannot be used. [Enter] Search for a card named "Dvalinn, the Herald of Continuation", from your main deck, reveal it and put it into your hand. Then shuffle your main deck. [Activate] Discard a card named "Dvalinn, the Herald of Continuation" from your hand : Put a resonator from your opponent's graveyard into your field. It can attack this turn. At the end of your turn, banish it.