Golem, Relief (CR 9)

Large Construct
Alignment: Always neutral
Initiative: +0
Languages: Cannot speak

AC: 23 (+14 natural, -1 size), touch 9, flat-footed 23
Hit Dice: 18d10+30 (129 hp); DR: 10/piercing or bludgeoning
Fort +6, Ref +8, Will +7
Speed: 20 ft.
Space: 10 ft./10 ft.
Base Attack +13; Grapple +23
Attack: Slam +18 melee
Full Attack: 2 slams +18 melee
Damage: Slam 2d8+6/19-20
Special Attacks/Actions: Surprise
Abilities: Str 23, Dex 10, Con -, Int 8, Wis 12, Cha 1
Special Qualities: Construct traits, immunity to magic, meld with stone, phase door
Feats: Cleave; Great Cleave; Improved Critical (slam); Improved Natural Attack (slam); Improved Sunder; Lightning Reflexes; Power Attack
Skills: Hide +6* and Move Silently +11
Advancement: 19-27 HD (Huge)
Climate/Terrain: Any
Organization: Solitary or pair
Treasure/Possessions: Standard

Source: Dragon #334

Surprise (Ex): A relief golem melded with the wall receives a +20 circumstance bonus on Hide and Move Silently checks the round after exiting, often allowing them to surprise intruders.

Immunity to Magic (Ex): A relief golem is immune to any spell or spell-like ability that allows spell resistance. In addition, certain spells and effects function differently against the creature, as noted below.

A stone to flesh spell cast on a relief golem prevents it from using its meld with stone and phase door ability and negates its damage reduction for 1 hour with no saving throw. A soften earth and stone cast upon a relief golem slows it (as per the spell slow) for 2d4 rounds with no saving throw. Casting transmute mud to rock on a relief golem heals it of all its lost hit points.

Meld with Stone (Sp): A relief golem can enter a stone surface at will as a standard action as per the spell meld with stone. While inside the wall, any carvings or paintings on the wall shift and alter to accommodate the image of the relief golem that appears where it has merged. A relief golem can see and hear out of the stone surface that it is melded with. This effect lasts until the relief golem decides to exit the stone. The caster level for this effect is equal to the relief golem's Hit Dice. Casting stone shape on a wall containing a relief golem forces it to leave immediately.

Phase Door (Sp): A relief golem can walk through wood, plaster, and stone walls at will as per the spell phase door as a standard action. Such portals can only be used once and the relief golem cannot take other creatures through. The caster level for this effect is equal to the relief golem's Hit Dice.

Skills: A relief golem receives a +8 racial bonus on Hide checks made in an area of stone, earth, or sand.

Relief golems attack by surprise against the nearest foe that meets the requirements set by their maker. When possible, a pair of relief golems flanks a foe caught between them in a hallway.