In other words, you must be at least 7 points ahead to win with this card
One of its major weaknesses is that spells may only be countered once, and that once is when they're cast, so you've got to have the mana, or you may just end up getting beaten by the one card that you didn't counter if you can't dig for your Sphinx fast enough, (though the Into the Roils do provide a countermeasure to this)
While it is an extraordinarily rare card, if you're considering spending the inheritance money from your oil baron uncle on this No.3 Trainer Pikachu, I suggest holding your horses (or your Ponyta, whichever you prefer)
Bayou Groff is probably more of a 5-drop than a 2-drop here, so my curve is a tiny bit higher than it looks, too
Of course, a sword and shield is great, but what about armor
10 yen per card, no matter how many cards you buy