Jeopardizing Dragon

[AUTO]:When this unit is placed on (RC), if you have a vanguard with "Youth" in its card name, 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.