Solo puzzle with OTK fatigue

Hello everyone. I haven't played HS in many, many years, but just now started again. I remember that I played some solo puzzles, of which one I could not beat. It was about an OTK strategy where the opponent had a bunch of northshire clerics and you needed to heal a bunch of minions. Now for my question: where can I find these solo puzzles?? The layout has changed completely and I cannot find this particular one..