The problem with Cahir is that Gwent is not a complicated game. Practically every card effect comes down to either Boosting or Damaging one or more units, and Cahir effectively stops an opponent from doing one of those things. Yes, Cahir can be removed, and to be honest, it's not even that challenging most of the time; however, Cahir's effect is still not good for the health of the game. No single card, no matter its provision cost, should single-handedly decide the outcome of a round, and that's generally what Cahir does against a number of decks if they are unable to remove him. If the developers ultimately disagree with this statement, then at the very least, Defenders will have to go so that every game-breaking card has the option of being immediately removed.By interesting I mean at least he has a unique effect - a gamechanger vs. some decks, yes, but definitely not something you cannot react to. A fair card, polarizing, but fair.