Actually, you could save up 5 dragons/wyrms, stall, play the dragons and the skyblitz and win in one turn, avoiding any CC. At least I think that is a possible way to play.
I don't know much about it, but I tend to agree it isn't a rush card. If you were playing a dripple rush you might play out 5 creatures and win under 10 turns. Suppose you said, ''ok, I have my 5 creatures. I will stop playing, and in 2 turns when I have 8 quanta I finish with the sky blitz.'' Tiny problem. After those 2 turns, you have won the game on the board without needing the sky blitz. I know it happens. I've had a dragon in my hand while small attackers killed the opponent. Of course a dragon wouldn't have exactly doubled the attack, (more like + 40 - 50% damage) but the idea is the same.
In the right context, this card should do 50 damage for 8 quanta. If you had 5 upped sky dragons, is 65. It takes a dragon 5 turns to do that, and the cost is 12
. So the skyblitz is much cheaper than a dragon that is in use for 5 turns. Don't think this stall is impossible. I have dropped 5 earth dragons after casting stone skin. With a bit of shielding you can gain the air quantas and drop at least 5 dragons in air also. It's a very special strategy and I can understand it's not peoples cup of tea, but it can work. It won't kill the opponent at once if it has 200 HP, but then neither does an earth stall. But if you did 130 damage at once, I'd be surprised if the opponent had enough defence to make it through another turn.