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The '''Batman/Superman OverPower''' expansion debuted in September 1996 with 334 cards ''(30 [[Character Cards]], 150 [[Special Cards]], 36 [[Basic Universe|Basic Universe Cards]], 28 [[Mission Cards]], 36 [[Power Cards]], 12 [[Universe: Teamwork|Teamwork Cards]], 12 [[Universe: Training|Training Cards]], 20 [[Event Cards]], 10 [[Universe: Ally|Ally Cards]])''.==Distrbution==Cards were distributed in:* Booster packs of 9 cards* Booster boxes of thirty-six 9 card booster packs* Starter decks of 69 cards* Starter boxes of 12 starter decks==New Special Card codes==With the '''Batman/Superman OverPower''' release, the following Special Card codes were introduced: [[DD]] [[DE]] [[EM]] [[EO]] [[EP]] [[EQ]] [[ER]] [[ES]] [[ET]] [[EU]] [[EV]] [[EW]] [[EX]] [[EY]] [[EZ]] [[FA]] [[FB]] [[FC]]==New card types==[[Universe: Ally|Ally Cards]] were introduced.==New game mechanics==Hero/Villain codes were introduced. The Intellect characters made a debut because (continue).<!-- ==Game imbalance== -->