This vaguely humanoid creature with a body made of unworked ore emerges from the ground and glances around with coin-like eyes.
Metal Elemental
A metal elemental uses all of the statistics and abilities of an earth elemental except as noted below.
Special Attacks metal mastery (instead of earth mastery)
Metal Mastery (Ex) A metal elemental gains a +3 bonus on attack rolls if its opponent is wearing metal armor, is wielding a metal weapon, or is made of metal (such as an iron golem).