- Plans: Thorium Shield Spike
- Use: Teaches you how to make a Thorium Shield Spike.
- Thorium Shield Spike
- Use: Attaches a Thorium Spike to your shield that deals damage every time you block with it.
- 1 Charge
- Sell Price: 5
- Thorium Bar (4), Dense Grinding Stone (4), Essence of Earth (2)
- Requires Blacksmithing (275)
- Sell Price: 40
This item is a vanishingly rare world drop.
The only creatures it drops from with any measurable regularity are:
- Onyxia in Onyxia's Lair
- Lord Kazzak in Blasted Lands
- Emeriss in Ashenvale
- Lethon in Ashenvale
- Highlord Kruul in Durotar
- Azuregos in Azshara
- Nefarian in Blackwing Lair
- Taerar in Ashenvale
- Ysondre in Ashenvale
Note that it drops from these creatures 3% or less of the time.