metazoo 1st edition booster box Seance summon ancient Artifacts Native 1st Edition MetaZoo TCG

From when

Cyber Blader[edit] Originally, the "3 monsters" effect of "Cyber Blader" could negate Continuous Effects, leading to the possibility of infinite loops

Text can also reveal that a card is fake if a certain portion of the cards text doesnt use the correct font, is misaligned, or has too little or too much shading

1x XY Primal Clash Booster Pack

(Draw 2 cards from your deck.) BT10-038 R Digimon Lv.5 Sanzomon Color Yellow Cost 7 DP 7000 Digivolve Cost 1 Yellow 3 from Lv.4 Form Ultimate Attribute Vaccine Type Monk Card Text 1 [Effect] [When Digivolving] 1 of your opponent's Digimon gains Security Attack -1 until the end of your opponent's turn

Apparently a lot of these new mechanics were just spun out of the ether with no intent to use them, but some of the new things would see use later on