Wasser Rotovisor

[AUTO]:When this unit is rode upon by a grade 3 card with "Rotovisor" in its card name, look at the top seven cards of your deck, choose up to one grade 3 or greater card with "Rotovisor" in its card name or up to one Arena card from among them, reveal it and put it into hand, and shuffle the deck. If you did not reveal a card, you may call this card to (RC). [AUTO](RC):When this unit attacks, if you have a grade 3 or greater vanguard with "Rotovisor" in its card name, this unit gets [Power] +5000 until end of that battle.