Demonsbane

Demonsbane is a recurring weapon in the series. It is generally a mid-ranked sword that provides no additional effects.

Final Fantasy XII
Demonsbane is a mid-ranked one-handed sword that provides 59 Attack and 5% Critical. It requires the Swords 5 license to equip (Swords 3 in the International version), and can be obtained either by finding it as treasure in the Tomb of Raithwall or by buying it for 6,000 gil at Rabanastre, Mt. Bur-Omisace, and Nalbina Fortress.

Dissidia Final Fantasy
Demonsbane is a level 50 Exclusive weapon for Gabranth, which provides +36 Attack and EX Mode Duration +20%. It can be obtained from the shop by trading in 15,460 gil, Rapier, three Spirit Stone, and two Time Shard.

Dissidia 012 Final Fantasy
Demonsbane returns as a level 30 Exclusive weapon for Gabranth and provides +40 Attack and EX Mode Duration +10%. It can be obtained from the shop by trading in 61,000 gil, Rapier, Scarletite, and five Warrior's Desire.