Just two cards on top of their list…
Rainbow Life
Self-Destruct Button
Source: http://www.yugioh-card.com/japan/event/world_championship/expert.php
[OCG] Forbidden Cards at Japanese World Qualifiers
By NeoArkadia
NeoArkadia
NeoArkadia is the 2nd Number of "The Organization" and a primary article writer. They are also an administrator for the forum Neo Ark Cradle.