If it doesn't have a counterpart to completely stop all physical damage, then it should never have existed. (edit - neither should ever exist in any game. Complete, permanent nullification of any form of physical/magical/ranged damage is crazy powerful no matter what game you play)
GTB is an extremely, overly powerful card that has imbalanced the game to the point where it has heavily influenced the development of this game.
Whoever created that card has a serious, serious hate for magic characters, and hopefully doesn't have a job in the video game business anymore.
Now despite it being so stupidly overpowered, I can't see it getting nerfed or even balanced. Too much of the game has been built with that card in mind and it would throw out the balance of just about everything.
Edited by Tkwan, 24 October 2014 - 01:30 AM.