I used to play this card before trading was enabled on TCGO. I don't think it's a great card, but it's certainly not terrible. Even with the unnecessary drawback of the second attack, it can still 2HKO anything baring eviolite. It's catcher bait wit high costing attacks and retreat, but blastoise does help with this (though Keldeo is still better to run alongside).
7/10 Not the best, but at least you don't have to worry about much OHKOing this.
Full Art 9/10.