yugioh deck how many cards should my have? I'd say **40**. Yeah... 41 or 42 won't hurt a lot, but still the probability of drawing a starter already decreases with that number. Many 7 Yu-Gi-Oh! Archetypes Getting Support
Description
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COWER in fear at the unspeakable terror of Blasphemous Act
20.5 by 16.0 by 12.0cm Additional product info: A plush Pikachu that becomes a card stand
Ad Nauseam Ad Nauseam is a high-stakes play that can draw you a significant portion of your deck at once

As for its use in a battle, it's not the best

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