[AUTO]:When this unit is placed on (RC), if you have a vanguard with "Youth" in its card name, [COST][Counter-Blast 1], reveal the top five cards of your deck, discard all cards other than trigger cards from among them, and if you have a grade 3 or greater vanguard with "Youthberk" in its card name, this unit gets [Power]+3000 until end of turn for each trigger card revealed. Shuffle the deck.