Riema Blaurakete

:When this unit is placed on , if you have a vanguard with "Blau" in its card name, and the number of cards in your damage zone is more than or equal to the number of cards in your opponent's damage zone, 1/ 1. :[Put this unit into your soul] When the attack of your vanguard with "Blau" in its card name hits a vanguard, you may pay the cost. If you do, draw a card.