I was recently in a match where I was using my Vintage legal deck and someone opined that a card i used to win ruined the game, and then asked me to stop playing banned or restricted cards, saying that this card "ruined" the game. The card: Berserk. Now I did inform them that berserk is not only not banned, it is also not even restricted in Vintage or Legacy decks. As I played MtG when it came out, I even remember that Berserk was only uncommon, not even a rare.
Personally the only thing that has ruined the game for me is card sleeves, but anyways.
What cards are too overpowered ? Personally i think a Primeval Titan is way more overpowered than Berserk, but I'd like some community feedback. Thanks, good luck.