No, this is easily the most OP card i've ever seen.
15 any quanta you can get easily.
For 4 rounds, you can do whatever you please to violate the enemy.
6 of these, and you basically gutted any creature damage the enemy has, i cannot think of many decks that could survive that.
Fire bolter only.
It would be much more balanced if it applies to your own creatures too, in that case i would say: fine.
And, make it cost some color!
Btw, what SG said would be fun, and also totally OP. (Unless it applies to your own creatures too).