Decimation

Summary
Decimation is a Specter weapon that can be crafted by materials from the Spider Lair or just dropped by the boss of the dungeon. Weapons from the Spider Lair are recommended for defeating the boss of the next dungeon, Oven Buster. By design, it is a sword with a red and white blade with a hilt that has a side longer than the other with a few red orbs implanted into the middle of it, presumably spider eyes. To craft it, you must go to the Fusion Caster with the required materials.

Trivia

 * If you look closely, there appears to be a very small albino spider that sits on the blade of the sword.