Bloodsoul Breastplate

The Bloodsoul Breastplate is a Blacksmith-made mail chestplate, part of the Bloodsoul Embrace armor set.

Source
The Bloodsoul Breastplate is crafted by Blacksmiths with a skill level of 300.

The plans are sold by Rin'wosho the Trader in Stranglethorn Vale. You must be Revered with the Zandalar Tribe to purchase the plans.