Darkness Unleashed, Freiheit

-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. Darkness (Active if cards have been put into your soul during this turn):When this unit attacks, you may 2. If you do, choose one of your units for every four cards in your soul, and they get +5000 until end of turn. If the number of cards in your soul is thirteen or more, choose up to four cards from your soul with different grades, return them to your deck and shuffle it, and this unit gets +5000 for each card returned.