It's crap. Even magikarp is better than this.
The problem with this giant rodent is that it puts it to sleep on YOUR turn, which means you have to flip immediately after. If it remains asleep, then fine, you get free 20. Otherwise, it's just sitting duck. Not to mention that when it's asleep, you can't retreat it. Oh, and when it's affected by any special condition, you can't do nuts. And for a pokemon with no attacks, attaching 3 energy just to retreat is just universally stupid. You are FORCED to either switch it with Swoop (if it still exists in the next format) or use balloon berry, or warp point.
Honestly, NOT a pokemon you want to send up front. And 80HP ain't gonna last too long.
First person I see using this pokemon when it comes out, I'm gonna laugh at his face so hard I'll get a heart attack.