one piece booster box retail price Emperors In the New World and Kyros. One Piece OP-15 Booster Box

Mythics concentrate multiple powerful effects into a single card to provide massive value

This keeps them from handing your opponent two prize cards upon their defeat (or even three, as is the case with VMAX)

Although Clone strategies can be sometimes overdone, I like them for their ability to scale to the other decks in the pod

11 Thing In The Ice Printed in Shadows Over Innistrad, Thing in the Ice is a powerful double-sided mono-blue horror

There are plenty of other cards to add to the janky fun

It is always better to purchase slabs in person, particularly when buying a lot, as you can hold them, get a feel for the plastic, and get a much better view of the label than you will on sites like eBay or PWCC