Wrath of Tiamat

(You may cast a Legendary Sorcery only if you
control a Legendary Creature or Planeswalker.)
Deal X damage to all Creatures on the Field
except for "Cultist of the Dragon" and Dragon
creatures.
Search your Deck and/or Graveyard for a card
named "Tiamat of the NineHells" and add it to
your Hand.