A sinuous runestaff of white-veined spiraling glowbark

Auction Type: Manual
Auction Item: a sinuous runestaff of white-veined spiraling glowbark
Current Bid/Cost: 2,500,000 silvers

You note the following details about a sinuous runestaff of white-veined spiraling glowbark:

It imparts a bonus of +37 more than usual.
It has been infused with the power of a strange anti-magical substance (5 dispel attempts).
It is an enhancive item:
    It provides a boost of 5 to Cunning Defense.
    It provides a boost of 10 to Spell Aiming Bonus.
    It provides a boost of 10 to Dexterity Bonus.
    It seems to have more than your average giantman could count enhancive charges remaining.
It will persist after its last enhancive charge has been expended.
It appears to weigh about 2 pounds.
It is estimated to be worth about 17,500,000 silvers.
It is predominantly crafted of glowbark.
It is a daunting project (992 difficulty) for an adventurer to modify.
It has some unknown (scripted) benefit.
The runestaff is a rune staff that requires skill in twohanded weapons to use effectively.

Tier 4 Nervestaff