As with some others on this list, it can get out of hand pretty swiftly, and while Wizards would get more ambitious in the years since, it remains a really fun deck (Ive upgraded mine)
General takeaway, be normal and ask and that's normally enough
The mechanic disappeared right after in Eldritch Moon because the story shifted toward cosmic horror once Emrakul showed up, there werent any mysteries left to solve
1 Zekrom ex is Key to Miraidon's Triumphant Return Card Number: 172/086 For the better part of the start of the rotation, Miraidon has been lurking on the edges of the format, as it lacked a consistent power card that allowed it to close games, so it was only used as a consistency piece in Joltik Box decks
Just remember, you will only have one table so don't go nuts
Jirachi allows you to look at the top two cards of your deck, adding one to your hand and returning the other to the top of your deck