why are yugioh cards banned that in Yu-Gi-Oh! Forbidden & Limited March 2012 Tierlist of all currently banned – Why Were These Cards Banned?

We recommend that you insert your cards into card sleeves and also place them in a special binder

Unlike other negation cards, Herald doesnt require field presence, allowing it to be effective even in poor board states

The trade-off is pretty simple: Mega EX cards can be absolute monsters, but if your opponent knocks one out, they get to take extra Prize cards so youre gaining power, but youre also raising the stakes

Warriors Sword, The Prima Vista and token-making spells like Relms Sketching also count but saga creatures like Ramuh and Shiva wont, and neither will Travel the Overworld if you have more than three towns