Simon and his allies managed to defeat the Basilisk, but the Ministry of Magic was still determined to win. They unleashed a powerful magical force known as the Death Eaters, which had the power to cause mass destruction. Simon and his allies were able to hold their own against the Death Eaters, but it soon became apparent that they were no match for them. In a last-ditch effort, Simon unleashed his ultimate spell, Explodio, which caused a massive explosion that destroyed the Death Eaters and the Ministry of Magic's headquarters.