Inspire Yell Dragon

/:Blaze (At the beginning of each of your attacks, if you have more rear-guards than your opponent, your vanguard becomes blazing until end of turn) :[Put this unit on the bottom of your deck] When your vanguard becomes blazing, you may pay the cost. If you do, draw a card, choose one of your units, and it gets +5000 until end of turn. Shuffle your deck.