yugioh bewd deck Konami Saga of Blue Eyes White Dragon Structure Once Per Turn Deck] Synchro Blue-Eyes White Dragon

But of course, with its restrictive casting cost, it can only realistically be played by white/black decks in the format

Second, people can sweep the board with mass removal and then just attack you out of spite for a few rounds of smash-the-guy-with-the-stupid-deck, and you are suddenly lifeless and wondering how your overpowered deck lost to decks with things like Treasure Trove in them

Personal Reasons due to personal taste, change of mind etc

I think you'll need some deckbuilding finesse to get the most value out of The Speed Demon

This makes it very unpredictable to play against, and more often than not, it throws their strategies out of the window