When the general discussion of shape in DFO, the option is very important to the design and specifications of each tree. Even the rare mark symbol is used in more than one standard will have different values, each specification. On the contrary, we are discussing here, a sign of a good symbol is not used very few tanks, but the fact that there are occasional misunderstandings.
Glyph of Icebound Fortitude: For a brief time following patch 3.2, this glyph was adding value for tanks to the damage (Dungeon Fighter Online gold) reduction of Icebound Fortitude. Shortly afterwards, Blizzard hot-fixed the ability so that it would work as originally intended. Glyph of Icebound Fortitude increases the minimum damage reduction from IBF.
As one who has reached the value of defense, they can not hit the tank with a fatal blow; you have already passed a higher minimum so shape will give you no value. This glyph is for PvP players may not have any defense. Not all symbols are cut and dry as the tank is not useful, but some of them might be a good idea, it seems that in the first, the application may be disappointing. We provide Dungeon Fighter gold for you here.