What you thought was a section of ordinary stone floor unfurls itself before your eyes, assuming a humanoid form about 10 feet tall. The words “You shall not pass” echo throughout the area as the creature advances.
AC 20, touch 10, flat-footed 19 (+1 Dex, +10 natural, –1 size)
Speed 30 ft.
Str 22, Dex 12, Con —, Int —, Wis 11, Cha 1
While flattened, a flagstone golem is nearly indistinguishable from the surrounding floor. It takes a DC 25 Perception check to notice a flattened flagstone golem for what it is. Dwarves get a +2 bonus on Perception checks to notice a flattened flagstone golem.
Any energy-based (acid, fire, cold, electricity, sonic) attack that directly targets a flagstone golem is absorbed into its body dealing no damage to the golem. A flagstone golem can use the absorbed energy to repair itself, healing 1 hit point for every 3 points of damage the attack would have otherwise dealt. Or it can release the energy in a 30-foot cone that deals 3d8 points of energy damage (of whatever type was absorbed) to all within the area. An affected opponent can attempt a DC 14 Reflex save to reduce the damage by half. The save DC is Constitution-based. The flagstone golem can store the energy before releasing it as an energy blast for a number of rounds equal to half its Hit Dice (four rounds for the standard flagstone golem).
As a standard action, once per round, a flagstone golem can flatten its form to become (or appear to become) a section of floor, road, or any other stone surface. While flattened it cannot move or attack and its damage reduction increases to 20/adamantine. A flagstone golem can reform into its humanoid shape as a standard action.