The blisterwood stake-thrower crossbow, nicknamed Screwte after its designer Flaygian Screwte, is a two-handed ranged weapon created by combining an unstrung version with a crossbow string. It can only fire blisterwood stakes (ammo), which can be crafted from standard blisterwood stakes. Creating this weapon and its ammunition requires partial completion of The Lord of Vampyrium. Like all blisterwood weaponry, it is primarily used for killing Vyrewatch, who cannot be harmed by any other means. Its power against vampyric creatures increases for every 50 Vyrewatch cremated, up to a maximum of 500.