While not appearing physically or having any statistics inside the data, there is a text string of Revenging Staff suggesting that at one point during development that this weapon was planned to appear in the 3D remake as a staff.
Revenging Staff is a staff that provides 28 damage, 366 delay, HP +9, MP +9, with an additional HP drain effect. It deals 4.59 damage per second and accumulates 94 TP per hit. It can be equipped by level 57 Warrior, Monk, White Mage, Black Mage, Red Mage, Beastmaster, Bard, Summoner, and Scholar.
It can be only be obtained through synthesis.