Blackfury is one of the top polearms in Azeroth. It is created by Blacksmiths and gives bonuses to strength, stamina, and fire resistance.
Source
Blackfury is crafted by Blacksmiths with a skill level of 300 who also have the Weaponsmith specialty.
The components are:
- 16x [Arcanite Bar]
- 6x [Dark Iron Bar]
- 5x [Lava Core]
- 2x [Fiery Core]
The plans are sold by Lokhtos Darkbargainer in Blackrock Depths. You must have Revered reputation with the Thorium Brotherhood to purchase these plans.