When does the erudite mana-mask gets taken out of the game?

[Taxi]

Im thinking of messing around with my cleric but only if i can loot this mask in my 40s or whenever its meant to be quested.

[MiRo2]

I believe they were nerfed right around when Ruins of Kunark was released. It was also a retroactive nerf; all masks that had been quested before the nerf were affected as well.

[Martenus]

the call of bones was going to fear but i read in patch history it was nerfed before Kunark came out.