Found this in Fow, i know the req. is high but it still seemed interesting.

(Gold) Defensive Shadow Staff of Enchanting
Halves skill recharge of spells (chance 20%)
energy +10
Fire dmg: 11-22 (req. 13 fire magic)
Halves casting time of spells (chance 10%)
enchantments lasts 20% longer

Thanks for your help