The claw of Shyu'Yao

You look at the claw of Shyu'Yao in your inventory...
The claw of Shyu'Yao is here.

 This item seems to be key.
 It weighs approximately 5 lbs.
 This item cannot be worn.
 The key has 4 uses left.
 It is of a very good quality!

 Object 'claw shyu'yao' type key, extra flags evil.
 Weight 5, value 1716, level 51.
 Object Quality (10 / 10 hps)
 Modifies hp by  -500 continuous
 Modifies hit roll by  9 continuous
 Modifies armor class by  9 continuous