finding artificer prestige class! help?

[DreadWarlock]

i know i saw some prestige class for an arcanist/artificer that gives you a mechanical fist and i think it turns you into a warforged... i can't find it anywhere. :( can somebody say what is it in

[MeeposFire]

Renegade Mastermaker in magic of Eberron.

[DreadWarlock]

Thanks a lot!