Honestly, the Karma Cut didn't perform well in tourney, but it tested really well before. My logic behind Karma Cut was that it is strong against Birds and Zombies and those were the two most prevalent decks so I should just main them instead of siding them. Unfortunately, they just weren't extremely impactful iirc or I wasn't hitting high value targets off them (I think I hit Gorz against both Silchas and MattK), so they were worse than raigeki break. I still think there's an argument for karma cut over raigeki break though since it can cut off options for follow up plays.
