Current script used by the GTB card is
{ bonus bNoMagicDamage,100; bonus bUseSPrate,100; },{},{}
Which nulifies 100% of all magic regardless if benificial or harmful, GTB card renders Magic users completely useless against anyone with this card equip, which is non sense since it does not take in to account of the element used, as there is currently no card to my knowledge that negates 100% physical damage. In my opinion it completely throws off PvP and makes High Wizards/Priest, Soul Linkers, Ninja, and Proffessors all completely useless and Stave Crasher is not enough as from experience it only does roughly between 1-5k damage to most players. I propose to change GTB to this script wise
{ bonus bMdef,200; bonus bUseSPrate,100; } },{},{}
200 MDEF would still give the wearer well over 100% protection against offensive magic, even if a player is using 2 Tao Gunka Cards. This change would allow magic users the opportunity to defend themselves against well geared players, rather than just end up cannon fodder.