Championship Series held back in 2015, then you would have been given one of these epic cards and have sent multiple enemies to their doom while playing with friends ever since
Later, he and the other heroes never have a problem fighting the hordes of Bit and Boot whenever they appear, but most of them are defeated by Bohman and Lightning
Good games should take about 10-15 minutes to explain, IMO
Using the Shadow Alchemy inscribed in the Millennium Spellbook / Millennium Tome ( Sennen Majutsu Sho ), he secretly ordered the massacre at the village of Kul Elna, using their blood and corpses, which he melted into gold, to create the Millennium Items to defend his brother's kingdom
A-Assault Core X LIGHT Level 4 [ Machine / UnionEffect ] ATK 1900 DEF 200 Once per turn, you can either: Target 1 LIGHT Machine monster you control