“Anyone who sees the eyes of a basilisk serpent (Basilisci serpentis) dies immediately… Its touch and even its breath scorch grass, kill bushes and burst rocks. Its poison is so deadly that once when a man on a horse speared a basilisk, the venom travelled up the spear and killed not only the man, but also the horse. A weasel can kill a basilisk; the serpent is thrown into a hole where a weasel lives, and the stench of the weasel kills the basilisk at the same time as the basilisk kills the weasel.”
Pliny the Elder
The basilisk’s lair should be easy to identify; all nearby vegetation is blighted, scorched, and withered. The basilisk is immune to its own venom, so a mirror will do no good in this fight. One’s only hope is tossing a weasel at it.
Any part of a basilisk might be profitable to sell. Basilisk blood is a pricey commodity due to the obvious challenges in obtaining it. Pharika claims that it can be used to make antidotes, but few have even been able to obtain it to experiment with.