Dust Wight (CR 7)

Medium Undead (Earth)
Alignment: Always chaotic evil
Initiative: -1 (Dex); Senses: darkvision 60 ft., Spot +11, and listen +11

AC: 20 (-1 Dex, +11 natural), touch 9, flat-footed 20
Hit Dice: 16d12 plus 16 (120 hp); DR: 5/adamantine
Fort +7, Ref +4, Will +10
Speed: 20 ft.
Space: 5 ft./5 ft.
Base Attack +8; Grapple +13
Attack: Slam +10 melee
Full Attack: 2 slams +10 melee
Damage: Slam 2d6+8/19-20 (includes adjustments for Power Attack feat.)
Special Attacks/Actions: Crumbling touch, petrifying cloud
Abilities: Str 21, Dex 8, Con -, Int 8, Wis 11, Cha 11
Special Qualities: elemental turning vulnerability, undead traits
Feats: Great Fortitude; Improved Critical (slam); Improved Natural Attack (slam); Improved Sunder; Improved Toughness; Power Attack
Skills: Hide +11, Move Silently +11, Search +10, Spot +11, and listen +11
Advancement: 17-18 HD (Large); 19-24 HD (Huge)
Climate/Terrain: Any
Organization: Solitary or gang (2-5)
Treasure: None

Source: Monster Manual III

This haggard humanoid creature stands in a small cloud of dust. Its stonelike features seem eroded and crumbling, like an ancient statue battered by the elements.

Dust wights are hateful creatures formed by a conjunction of elemental earth and negative energy. They seek to tear down and destroy all creations of stone and metal, and if they have to kill living creatures to do that, so much the better.

A dust wight looks like a gaunt, human-sized earth elemental with forever-crumbling features. Despite its worn appearance, it weighs about 400 pounds.

Dust wights speak Terran.

Earth Subtype

This subtype usually is used for elementals and outsiders with a connection to the Elemental Plane of Earth. Earth creatures usually have burrow speeds, and most earth creatures can burrow through solid rock.