I like the card in the deck. It's really cool to bring up a Giratina Let Loose, or Regice, (you know, something with giant retreat.) and make them sit there with poison. I'd just make sure you play it carefully- Warp Energy, Warp Point, and Unown Q are all popular cards, so it's not like you can just bring anything up whenever you feel like. If you play it right, it will work really well, though.