Burning Horn Dragon

[AUTO]:When this unit is placed on (RC), [COST][Counter-Blast 1], look at the top seven cards of your deck, reveal up to one card with "Overlord" in its card name and put it into your hand, and shuffle your deck. If you did not reveal a card, [Counter-Charge 1]. [AUTO](RC):When your vanguard with "Overlord" in its card name attacks, this unit gets [Power] +5000 until end of turn.