Flareblow Dragon

:When this unit is placed on during your main phase, if you have a grade 3 or greater vanguard with "Gandeeva" in its card name, 1, choose one of your opponent's rear-guards, and retire it. If you did not retire a card, look at the top three cards of your deck, choose up to one grade 3 or less unit card from among them, call it to , and discard the rest.