Goblin Sapper Charge is a bomb that deals AoE damage to everyone around the caster, but also deals damage to the caster.
The recipe for this item is taught by the Goblin Engineering trainers.
Effective when used by a class with high health but low damage (Such as a protection Paladin, or defense-specced Warriors) facing a class with low health but high damage (Such as a Rogue, or Mage).
An excellent 'If I'm going down...' resort.
An upgraded version is Super Sapper Charge.