Infrat Swallow

/:When this unit attacks while boosted, 1, reveal the top card of your deck, and if it is a grade 1 or greater unit card, put it on an open as a locked card. (Return it to its original position if it is not) (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.