hmm , could have high potentiall sniping the bench.
though 3 energy or even 2 energy and energy gain make this attack look like u need to invest in for a turn or two perhaps more depending on your set up.
having +40 hp is nothing to sneeze at , however it requires ure opponent to have taken 3 prize cards which is a bit off putting.
80 hp otherwise for an sp seems basic and standard similiar to skuntank g and crobat g
weakness to dark is alright since not many dark pokemon are played except weavile + flygon varient
2 retreat cost seems very daughting but poke'turn and moonlight stadium take away this factor
overall:
good for sniping bench'd uxies , azleaf , mesprit and anything prone to psychic weakness especially with lucario gl in play to take cheap prize cards
7/10.