Spiral Breaker

/:When this unit attacks while boosted, 1, choose one of your other rear-guards, and it. If your opponent's vanguard is grade 3 or greater, of all of your rear-guards in the same column as the chosen unit. (Hand):At the beginning of your ride phase, if your vanguard is grade 1 or less, [discard this card], look at the top five cards of your deck, choose up to one grade 2 or less card from among them, reveal it and put it into your hand, and shuffle your deck.