It allows you to concentrate all efforts on getting those Stage 2's out there. Your ultra ball, Vulpix and Olivia grabs will be for the Metagross GX line; your energy attachments and split will be concentrated to allow it to attack consistently. I'm not saying get rid of Necromaza GX, but make it more of an even partner than the leader of the deck. You shouldn't have a problem retaining the Metagross GX once they're out in most matchups, while you will be needing to replace Necromaza GX as its knocked out.Not really, how is getting 3 Stage 2s in a Gross GX deck much easier than getting 3 Stage 2s and a basic (which allows you to retain the 3 stage 2s consistently)