Digimon Card Battle/YMMV

• Game Breaker: Download Digivolve, Rosemon's Lure Card, Hacking and the 7-S cards in general.
  • Some support effects borders on this, especialy those from Rare. The most prominent example however, is Toy-Agumon's support, by discarding 1 random card from your hand, you reduce the HP of boths sides into 200. Yes, including Ultimates. This turns the Big Bad that uses The Computer Is a Cheating Bastard to the max into a total joke.
• Good Bad Bugs: According to its description, the Special Digivolve card allows you to digivolve your Digimon into one of a different specialty, adding 20 DP to the amount normally required for digivolution. What it actually does, however, is reduce the required DP by 20. Additionally, Special Digivolving a Champion which was not digivolved from a Rookie (making its stats halved) will result in an Ultimate with its proper stats.
• Junk Rare: The Fake Sevens and the 12 Digi-Jewels cards are only obtainable via fusion mutation, an event that only has a 1% of chance of happening while fusing cards. Trying to get all of them recquires a lot of time, patience and spare cards from the player and their effects are so low better results could be achieved by using some of the most common cards in the game. Fake Sevens is easily the worst of them, as it does absolutely nothing.