My first card review. Cracks knuckles.
HP: 70. Compared the usual 80 of its ancestors, it's nothing to lose sleep over.
Spiky Shell: If it wasn't that pesky one retreat per turn rule, this would be worse. Feels more cheap proxy to EX Rocket Returns Dark Raticate to me. But I'm not complaining. Glad their playing on this theme some more.
Pop: If you can afford it, the energy swap can be useful and the high damage can help with Exs. (Not even Electric can avoid the high damage). Although I'd like to think there'll be safeguards for Forretress. Tools, berries, what have you.
Otherwise, can be useful in certain situations than not.
6/10.