The reason I'm answering this again (I answered it during the Gotcha rules section if you weren't paying attention) is that there's a different answer for this card
Its high mana cost is offset by both the cost reduction ability and by tapping for the turn it comes out
More from Rolling Stone Pokmon TCG may occasionally make headlines for the rare cards that can sell for tens of millions of dollars, but there's still a strong community that is in it for the love of the characters, collecting, and the game itself
The Naya colored sorcery will destroy a multicolored permanent for three like Commanders or all Auras and Equipment for three too, so it's mass removal
And I love that Psionic Pulse from Sapphire Dragon gives you another copy of Negate, and the Dragon side of the card is solid value for seven mana with a sizeable body and a good combat trigger
It is just not wise trying to have such an even split of effects with such poor ability to capitalize on them