A sapphire gleams on the brow of this bronze sallet helm of uncertain provenance. Any sorcerer who dons this helm can sense that it contains a strange, dormant mind. The Mindhelm can absorb 2 Notches.
During the Crawl, if you're concentrating on a spell, you can take a few peaceful moments to let the helm concentrate on that spell in your stead. Thereafter, you normally don't lose concentration on that spell when you're hurt. If the helm is removed, you're Knocked Out, or you're at Death's Door, you lose the spell, but don't suffer maleficence.
You can concentrate on a second spell while the helm maintains the first. If you do, the second spell follows the usual rules for concentration (HMtW, pg. 201)
The sapphire set in the Mindhelm is worth 300 gold. However, prying out the gem destroys the helm's power.