Only 1(maybe 2?) is realistically worth it. Purity Forest is for Celebi and is BALLS hard. Wish Cave, I'm not sure about and...
Joyus Tower. ANYTHING. BUT JOY. IT'S PAIN AND MISERY AND IT MAKES ME GENUINELY MISERABLE. ALL I WANT IS A NEW F**KING FRIEND BOW. PLEASE. LET ME HAVE THAT. FOR F**KS SAKE. DO NOT MAKE THE ONLY WAY TO GET A NEW FRIEND BOW A NEARLY IMPOSSIBLE F**KING TASK.