Decks being played in Dkayed's $ tournaments shows us which decks are decent-good. Nobody played or even won w/ Dark Worlds if played, no one. KONAMI basically pulled a sneaky SCAM when they released DWs & DWD. HAHAHA...
They don't need them necessarily atm. They can clear half the field in 2 cards & still have 3~4 other cards to 🔥 an opponent's LP, or at least put a major dent into it.