But with weakness this OHKO's many pokemon EX and GX who often have right around 180HP. Wouldn't be a bad option in that case... and a Fighting Fury Belt or Dumbbells could keep it in play. (I'm not trying to say it's an amazing card though, just that it could have its uses.)
(And thinking about it some more - with Choice Band against Weakness, now you're hitting for 240 - really not bad at all if you can KO and the opponent brings up something that can't attack that turn.)
The problem isn't the damage, it's what the attack requires.
2 attachments, evolution, tool card.
This is not something you can consistently set-up every turn... which quickly becomes a problem, since this card will be revenge killed by nearly anything in the meta.
Even Tapu Lele with just a DCE will knock it out, due to the +30 side effect.
Also, Drampa is run with Garbodor.
This card is weak to Psychic, and Garbodor costs 1 energy to set-up.
Another popular Psychic type, Espeon-GX, OHKOs this with the side effect... again, for 1 energy.
The risk vs reward is heavily imbalanced on this card.