To this day, two of the monsters remain banned with the others limited to a single copy each - such is a testament to their unrivaled strength and speeds as one of the best and most powerful Yu-Gi-Oh
Lowering a creature's power Blue is the color that gets N/-0 effects, what R&D nicknames "shrinking." This can be done on an instant, often affecting more than one creature until end of turn
This goes against the spirit of the cards variable nature, and can too efficiently destroy units that cost more than it, while also developing the battlefield
Before their ban, the card most recently banned from the Standard format was Lysandres Trump Card, which was banned as of 15 July 2015
They came holo-stamped with the gold Lv.X badge in the corner and pulled at roughly box level
The intent of these cards was always that the costs had to be paid before the cards could be used, and we want to maintain that