From The Heroes of Might and Magic III wiki

Worn on the Head, this mighty helmet increases your Knowledge by +10 but also decreases your Spell Power by -2.

Class: Relic

You cannot purchase relic artifacts in Artifact Merchants. Cost is derived from sell price.

Basic Cost: 50000 gold

Forms the Titan's Thunder together with the Titan's Cuirass, the Titan's Gladius and the Sentinel's Shield.