Dimension Expulsion Colossus

(This ability is active if you have one or more face up G units in total on your or G zone):[Choose one of your grade 0 rear-guards, and put it on the bottom of your deck] Search your deck for up to one grade 3 card, call it to , shuffle your deck, and that unit gets +5000 until end of turn. :[ 1 & 1] When this unit is placed on , you may pay the cost. If you do, choose one of your opponent's grade 1 or less rear-guards, and your opponent puts that unit on the bottom of his or her deck.