Arcane Bomb

Source
The Arcane Bomb is a spell-caster's nightmare. It drains mana, does damage, and silences the caster for 5 seconds. It is crafted by Engineers with a skill level of 300. They are crafted 3 at a time.

The recipe for this item is taught by, which is a world drop off high level creatures.

Shopping list

 * 1 Runecloth
 * 4 Thorium Bar
 * 1 Ironweb Spider Silk
 * 1 Arcane Crystal