#12: Nether Beast; a sword forged from the core of Mars, this hellish sword feeds off the blood and flesh of its victims. As it feeds, the sword gains more power. Unfortunately, this sword is dangerous for pacifists. If you do not feed the sword with blood, eventually it will consume the weirder. Python's skull works well with it. Although the Nether Beast requires a kill, the Python's Skull can make the enemy bleed, allowing the sword to feed off the blood.