There's a glitch regarding the Red Card and Destiny Bond in Doubles and maybe Triples. Assume that the opponent is holding a Red Card for one pokemon, then another pokemon on their team has Destiny bond. The pokemon uses Destiny bond, then you kill it with a spread move. The red card activates, and the pokemon that used the spread move switches out into another pokemon. Destiny bond activates, killing off the pokemon that used the spread move, but now the opponent can only attack the pokemon that didn't use the spread move, and not the pokemon that was switched out. Meanwhile, the person using the spread move cannot battle at all, as it only shows a 'Skip Turn' and a 'Go to last turn' button.
Recreation of glitch: http://replay.pokemonshowdown.com/doublesou-405232899
All credit goes to Meowanator for finding the glitch.
Recreation of glitch: http://replay.pokemonshowdown.com/doublesou-405232899
All credit goes to Meowanator for finding the glitch.