Dragonic Overlord "The X"

:[Legion 22000]"Dragonic Overlord the End"(If your opponent's vanguard is grade 3 or greater, this unit may return four cards from your drop zone into your deck once, search your deck for the specified card, and Legion) :When this unit [Legion], search your deck for up to one card with the same card name as a unit on your , reveal it to your opponent, put it into your hand, and shuffle your deck. :[ 1 & Choose a card named "Dragonic Overlord "The X"" from your hand, and discard it] At the end of the battle that this unit attacked, if the attack did not hit during that battle, you may pay the cost. If you do, choose up to two of your opponent's rear-guards, and retire them.