Red River Dragoon

:When this unit is rode upon by a grade 2 card with only Narukami for its clan, search your deck for up to one "Eternal Thunderbolt", reveal it and put it into hand, and shuffle the deck. :When this unit boosts, if you have a grade 3 or greater vanguard with only Narukami for its clan, 1, choose one of your opponent's back row rear-guards, and bind it. If you did not bind a card, you may 2.