This wickedly curved blade is composed of grey-black metal pitted with rust. Seemingly random spines and serration betray its sinister nature.
Thirst is a unique weapon. It weighs 10 pounds and is a mix of adamant, iron, and mithral; it was forged in a kiln lit with burning demons' bones and quenched in the blood of innocents. It bears the properties of a +1 vicious adamant weapon with the [Evil] subtype.
When Thirst is first grasped, it burrows into the bones of the arm, becoming almost permanently attached and causing 1d4 CON damage immediately. By focusing on the weapon as a swift action, the wielder can cause it to take the functional form of any Small, Medium, or Large piercing or slashing melee weapon, though the weapon appears designed with clearly cruel intent. The weapon can also be made to take the form and function of mundane tools or up to twenty feet of cable and a grappling hook. Thirst does not need to impede use of its host arm because it can take the form of a gauntlet.
Thirst is living metal, hungry and clever. It can reform if sundered with the standard action of its wielder. When Thirst is used to kill a creature, it devours that creature's soul, forever denying it an afterlife. (Animals, Constructs, Oozes, mindless creatures, and creatures with an INT under 3 do not have souls that Thirst is interested in devouring). Once a soul is devoured, Thirst can adopt fiendish properties by tearing the soul into it components, hit dice. For every 5 HD Thirst permanently consumes (obliterating them forever), it may gain an additional weapon property with an equivalent +1 value as a standard action. The wielder may focus on Thirst as a standard action and change the weapon properties by consuming more devoured souls, able to chose weapon properties with higher than +1 values if enough HD have been devoured. Thirst is limited by the power of its wielder, and may have no more weapon properties than +1 per 2 HD of its host (though there is no limit on the number of souls it may devour and retain).
Acidic burst, bane, bloodfeeding, corrosive, deadly precision, dessicating, dessicating burst, eager, flaming, frost, ghost touch, keen, maiming, profane, profane burst, psychokinetic, revealing, screaming, screaming burst, shattermantle, shock, sundering, thundering, warning, weakening
Consumptive, domineering, doom burst, enervating, fleshgrinding (a cable connecting the host to Thirst allows free movement to within 20 ft of each other), mindcrusher, paralytic burst, unholy, vampiric, wounding
Bodyfeeder, cursespewing, ethereal reaver, implacable, necrotic focus, speed
Every hour, Thirst permanently consumes 2 HD of its devoured souls, making them unusable for weapon properties. As soon as Thirst consumes every soul it has devoured, its wielder gains a negative level until more souls are devoured. If an hour passes and Thirst does not have at least 2 HD of devoured souls to consume, the wielder gains another negative level. The wielder may force Thirst to consume devoured souls immediately recover lost parts of himself, losing one negative level for every 5 HD of devoured souls it consumes. Alternatively, the host may cause Thirst to consume 1 HD to heal him 1d6 hp. When the host forces Thirst to consume devoured souls, Thirst gains no sustenance, and must still consume 2 HD of souls every hour to feed its hunger.
Thirst is cruel, and its bloodlust taints the mind of its wielder. The host must make a Will Save (DC 1/2 host's HD + 5) each time he tries to use nonlethal damage (even with weapons besides Thirst). Additionally, the host must make a Will Save (DC 1/2 host's HD + 10) whenever it becomes clear that Thirst could be used to kill an opponent and devour its soul in order to stop himself from doing this. If Thirst goes twenty-four hours without devouring any souls, the wielder must make a Will Save (DC 1/2 host's HD + 10) or immediately seek out the fastest and easiest way possible to devour a soul--usually achieved by preying upon weak innocents in residential areas.
When Thirst's host dies, as it always does, Thirst wrenches its iron tendrils free and lays there in the form of a falchion attached to bloody roots.