Chronofang Tiger G

/(This ability is active if you have one or more face up G units in total on your or G zone):[ 1 & Choose one of your other rear-guards, and bind it face up] At the end of the battle that this unit attacked a vanguard, you may pay the cost. If you do, choose one of your opponent's rear-guards in the same column as this unit, and your opponent puts that unit on the bottom of his or her deck.