PC on Plagueborn Shield R9 str.( -5/20% +9armor vs cold ) thank you^^

1. Plagueborn staff
Halves skill recharge of spells (Chance: 20%)
Fire damage: 11-22 (req. 9 Divine Favor)
+10en
Halves casting time of spells (Chance: 10%)
Enchantments last 19% longer
+5en

2. Plagueborn staff
Halves skill recharge of spells (Chance: 20%)
Fire damage: 11-22 (req. 12 Channeling Magic)
+10en
Halves casting time of Protection Prayers spells (Chance: 20%)

3.Plagueborn Shield Non-inscribable
Armor 16 Req9 str.
-5/20%
+9armor vs cold

Thanks in advance

I need to know how much about them@@"
thanks a lot@@