Genesis Dragon, Guardian Messiah

Example of a messiah g guard would be like this: Genesis Dragon, Guardian Messiah [Counterblast 1, Choose a g guard from your G Zone and turn it face up) When this unit is placed on (GC), you may pay the cost, if you do, choose one card from your hand and place it on your RC and you opponent choose one of his rear guards in the front you and lock it. When there are two or more locked cards, this unit gets shield +15000