Western Crossover Card Battle Simulator

Kelly just downloaded an immersive card-battling simulator. The game is great in every way. The only problem is that the cards never seem to do as they're told when she's playing, and sometimes they even fight among themselves and make her lose. Watching the superheroes diligently use their skills on the battlefield while the supervillains slack off and occasionally make things worse, Kelly can't help but shed tears of regret. She was such a fool. She shouldn't have played cards just because their stats were high, without considering that they were actually on opposing sides. Kelly: Use your skills properly, all of you!!! *flips table* Card-Battling Simulator Rules: 1. To obtain an NPC character card, you must either defeat the NPC or get their consent. 2. Cards can be combined in any way. Players may play multiple cards at once, but no more than ten. 3. Since cards have different allegiances, players need to pay attention to each character's faction. Playing cards from opposing factions at the same time may trigger infighting and cause you to lose the battle. P.S. 1. A naive, scatterbrained card player, an ultra-sweet Mary Sue story with no logic. 2. Everyone is extremely out of character. 3. Pairings are undecided. Theme: Card battling