opening a dark explorers booster box B&W Mega Darkrai ex *LURKING* In The SHADOWS! /

It was only available at the Pokemon Centers and a few licensed Pokemon retailers in Japan, in July, 2023, for a very limited time and in very limited quantity

#3 Encore Electromancer - Snapcaster Mage Set: Secret Lair Drop Series Increase: +$34.85 Current Market Price: $858.64 This Hatsune Miku version of Snapcaster Mage is so rare nobody knows exactly how rare it is, which means copies and sales have both been in short supply

You can only use this effect of "Invocation" once per turn

By allowing them to die on the opponent's turn, the Armed Dragon player can search out the weak LV3 dragon when it is most safe, then tribute it at the start of the next turn