D&Dtools1

This spell functions like iron body, except as indicated here.
You gain damage reduction 10/adamantine and a +4 enhancement bonus to Strength, but you take a -4 penalty to Dexterity (minimum Dexterity 1).
You are vulnerable to all special attacks that affect stone golems.
Your speed is reduced to one-half normal, and your weight increases by a factor of three.
Arcane Material Component: A small piece of stone that was once part of a stone golem, a greater earth elemental, or a castle's outer wall.