pokemon mega dream booster box ex Origin A product labeled as [Japanese Version] indicates that the text printed on the cards is in Japanese Pokémon Mega Dream EX M2a

The value of X is determined only as Leonardo's first ability resolves

This was before they released the Judge foil and long before the card was in Battlebond heck, it was before there were enough good green Cube cards to render Genesis more or less irrelevant in any format

R Rare Spider Egg X TRAP When your opponent declares a direct attack, while you have 3 or more Insect monsters in your GY: Negate the attack, and if you do, Special Summon 3 "Spider Tokens" (Insect/EARTH/Level 1/ATK 100/DEF 100) in Attack Position

Groups can mix and match their seating sections as long the group minimum is met

It also introduced Fusion monsters in a big way