Mythic Beast, Fenrir

:[ one or more cards], search your deck for up to one card with the same grade as the sum of the grades of the cards for this cost, reveal it and put it into your hand, shuffle your deck, and call a card from your hand to . :When your card is put from your soul into your drop zone, 1, and call one of those cards to . :When it attacks, 1, and this unit gets +10000 until end of turn.