Duneyrr, the Herald of Change (2-070) [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 "Durathror, the Herald of the End", from your main deck, reveal it and put it into your hand. Then shuffle your main deck. [Activate] Discard a card named "Durathror, the Herald of the End" from your hand : Discard all cards in your hand. Draw five cards from your main deck.