Conquering Supreme Dragon, Dragonic Kaiser Warning

-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. :[ 1 & Choose a face down card named "Conquering Supreme Dragon, Dragonic Kaiser Warning" from your G zone, and turn it face up] If you have a heart card with "Kaiser" in its card name, until end of turn, this card gets ":This unit battles all of your opponent's units in the front row in one attack." and ":When this unit's attack hits, choose up to two of your other units, and they get +5000 until end of turn.".