Magic Scientist, Tester Fox

:[Legion 20000]"Illusion Scientist, Researcher Fox"(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) :During your end phase, when one of your rear-guards is put into the drop zone, if this unit is [Legion], choose a card from your damage zone, and turn it face up. In addition, if the unit put into the drop zone has the same card name as a unit on your , draw a card, choose up to two cards from your drop zone, and put them on the bottom of your deck in any order. :When this unit attacks a vanguard, choose one of your rear-guards, and you may have that unit get +4000 until end of turn. If you do, at the end of your turn, retire that unit.