Dark Iron Reaver

Source
The Dark Iron Reaver is crafted by Blacksmiths with a skill level of 300. This item can only be crafted at the Black Anvil.

The components are:
 * 16x
 * 12x
 * 2x
 * 2x

are sold by in Blackrock Depths. You must have be Honored with the Thorium Brotherhood to buy these plans.