Two "r"? One "r"? I never could get my head around how to spell that. Anyhow... Wurmple's first attack reads: Signs of Evolution Search your deck for Silcoon and Beautifly, or Cascoon and Dustox cards. Show 1 card or both cards of a pair to your opponent and put them into your hand. Shuffle your deck afterwards. It's always been a rule that, when a card lets you get any card from your deck, you don't need to reveal it, but if the search is in any way more specific, you do need to reveal it, so that your opponent knows you obeyed the search requirements. As I see it, Wurmple lets you search for two specific cards, but gives you the option of only revealling one of them. This probably wouldn't get past a judge, but, where one isn't present, an unscrupulous player could search for, say, Silcoon and Elm, and the opponent could be fooled by that. The Wurmple player wouldn't have to reveal the Elm.