Before the Expedition set was formally released in America, distributor Wizards of the Coast made prototype versions of a handful of cards
Once you do so, an option will come up in your "missions" tab to complete the quest and reward you with the Mew card itself, like any other mission reward
Good players can use more Energy to play around Ambipom G, but their attacks will be much less consistent, so they will usually give Ambipom G an opportunity to score a Knock Out
All Leader cards have a Manga Illustration parallel version in this set
As for the actual deck building itself, it works very well
[10] However, Magic head designer Mark Rosewater would later say that doing so was a misstep, as the Transformers cards clashed with the nostalgic feel of the set