Can the Bane special ability on a weapon make its enhancement bonus higher than +5?
For example, if you have a +5 longsword of undead bane and you are attacking undead, is it treated as a +7 weapon?
If so, would it overcome DR/epic vs. undead?
Does the use of the Greater Magic Weapon spell change any of this? For example, if you have a +1 longsword of undead bane with Greater Magic Weapon bringing its "base" enhancement bonus up to +5, would the Bane enhancement still make this a +7 weapon vs. undead, and would it overcome DR/epic vs. undead?
For example, if you have a +5 longsword of undead bane and you are attacking undead, is it treated as a +7 weapon?
If so, would it overcome DR/epic vs. undead?
Does the use of the Greater Magic Weapon spell change any of this? For example, if you have a +1 longsword of undead bane with Greater Magic Weapon bringing its "base" enhancement bonus up to +5, would the Bane enhancement still make this a +7 weapon vs. undead, and would it overcome DR/epic vs. undead?