i am pretty sure that it isnt a shaffers so it is probably this

Stone Crusher
Legendary Mallet
One-Hand Damage: (190-210) To (231-256) (210.5-233 Avg)
Required Level: 68
Required Strength: 189
Durability: 65
Base Weapon Speed: [20]
+280-320% Enhanced Damage (varies)
Damage +10-30
+50% Damage To Undead
-25% Target Defense
40% Chance of Crushing Blow
-100 To Monster Defense Per Hit
+20-30 To Strength (varies)
(Only Spawns In Patch 1.10 or later)

it will probably still be worth alot because of it being ethreal it will do a ton of damage.