Temerarious Cataclysmic Rogue, Hellhard Eight

-Stride Step-[Choose one or more cards with the sum of their grades being 3 or greater from your hand, and discard them] this card on your from face down. :When your unit attacks, choose one of your units, and until end of turn, it gets +10000, and ":[Choose this unit and a card from your hand, and put them into your soul] At the end of the battle that this unit attacked or boosted ([Boost]), you may pay the cost. If you do, search your deck for up to one card, call it to an open , and shuffle your deck.".