Elven Bio-Weapon

A weapon shrouded in a lot of secrecy, and barely heard of, the 'Bio-weapon' is only known through short accounts by the Elves, in particularly Reptaria, we can only believe it to exist, but have little knowledge of how it operates.

It is believed to be 'buried', something or another below an Elven City to be used at any possible time when that settlement is in trouble. It is believe to be a weapon devoted to genocide, that being through killing without structural damage, the way it could operate could include firing splash potions in directions or a set direction or releasing a horde of mobs.

This can only be speculation, rather than due to 'secrecy', it is a rarely talked subject, which contributes to its lack of well spread knowledge of its existence. There is also a slight chance it could be a non-existent deterrent, and rather a warning or a fear of the unknown, rather than what it can do.