The only cards that never should have existed was Patches the Pirate.
But that got nerfed so now it's ok.
EDIT: Basically any card with very high draw rng based spike in win rate is bad design. It just happened that Patches was the worst offender as it happened on turn 1. But now that I think about it there are other examples as well.
oh and I forgot Jade Idol and Archivist Elysiana
The only cards that never should have existed was Patches the Pirate.
But that got nerfed so now it's ok.
EDIT: Basically any card with very high draw rng based spike in win rate is bad design. It just happened that Patches was the worst offender as it happened on turn 1. But now that I think about it there are other examples as well.
Shudderwock as time goes by with each expansion this card becomes more broken there will always be battlecrys
The Caverns Below
OK.
Duskfallen Aviana