This creature may be called ghoulish, but despite the description given above, I have yet to see any successful anti-undead spell vs it.
It is, however, the easiest of the silver-clad mobs to deal with. it was the ONLY sivler clad mob my ranger could solo at lvl 30, but at a loot of up to 5pp and common fs weapons, it wasn't back to hack at :)

Ak'anon Skylighters
Complex Platinum Silvered Rune
Complex Velium Embossed Rune
Consigned Bite of the Shissar IV
Crude Animal Pelt
Crude Silk
Crude Spinneret Fluid
Damp Marrow
Dry Marrow
Dusty Marrow
Essence of Moonlight
Fine Steel Dagger
Fine Steel Great Staff
Fine Steel Long Sword
Fine Steel Morning Star
Fine Steel Rapier
Fine Steel Scimitar
Fine Steel Short Sword
Fine Steel Spear
Fine Steel Two Handed Sword
Fine Steel Warhammer
Flame of Vox
Fulginate Ore
Glove of Rallos Zek
Grade C Caladium Extract
Grade C Choresine Sample
Grade C Gormar Venom
Grade C Larkspur Extract
Grade C Muscimol Extract
Grade C Nigriventer Venom
Grade C Oleander Extract
Iridium Ore
Platinum Painted Rune
Pliant Loam
Polished Crysolite
Rough Adept's Wand
Rough Defiant Chain Leggings
Rough Defiant Chain Sleeves
Rough Defiant Chain Tunic
Rough Defiant Chitin Shield
Rough Defiant Cloth Sleeves
Rough Defiant Knuckle Dusters
Rough Defiant Plate Boots
Rough Defiant Plate Gauntlets
Rough Defiant Stone Dagger
Silverwing Loop
Small Bronze Bracers
Small Bronze Breastplate
Small Bronze Collar
Small Bronze Gauntlets
Small Bronze Girdle
Small Bronze Greaves
Small Bronze Helm
Small Bronze Mask
Small Bronze Pauldron
Small Bronze Vambraces
Small Splinted Bronze Cloak
Steel Knuckles
Sullied Animal Pelt
Sullied Spinneret Fluid
Sunshard Dust
Thick Spinneret Fluid
Weighted Gloves
Words of Possession