Divergence Dragon

(This ability is active if you have one or more face up G units in total on your or G zone): 1 When this unit's attack hits a vanguard, you may pay the cost. If you do, choose one of your opponent's grade 2 or less rear-guards, and your opponent puts that unit on the bottom of his or her deck. :During your turn, when your G unit , choose one of your vanguards, and it gets +5000 until end of turn.