There are a couple of cards, that are not working as they should in the game. I will list them here. If new ones are found/I remember some more of them, I am going to add them to this.

• The Legendary Dragons (DM; Orichalchos duels): This can be one of the most fatal ones, if you are not aware, that these cards are bugged. This affects especially „Hermos“. If you control a monster in the Extra Monster Zone (the 2 Zones in between the players fields), you CANNOT use monsters from your hand for the Fusion Summon with „Hermos“ anymore, as long as the monster remains in the Extra Monster Zone.

• Lightforce Sword (DM; multiple Yugi duels): If you use it during the opponents turn, it will always count that turn as turn 1, even if the card was activated after the Standby Phase.

• Cloudian Poison Cloud (GX; Adrian VS Chazz): „Poison Cloud“ also destroys the monster when it was set.

• Iron Chain Coil (5D‘s; Yusei VS Armstrong): „Iron Chain Coil“ provides a permanent Attack Boost instead of one, that is only active while it is face-up on the field.

• Supersonic Skull Flame (5D‘s; Yusei VS Hunter Pace): „Supersonic Skull Flame“ can be revived from the Graveyard regardless of the card saying, that it can only be Special Summoned by banishing a „Skull Flame“ from Grave. The card works like as if it is saying "Must first be Special Summoned by...", which means, that it can be revived from the Graveyard once it was summoned by its actual Summoning Condition.