This sleek, jet-black humanoid is a cross between an insect and reptile, with four arms, scaly skin, and fanged mandibles.
AC 21, touch 14, flat-footed 17 (+4 Dex, +7 natural)
Speed 40 ft.
Str 18, Dex 18, Con 14, Int 14, Wis 12, Cha 11
Environment warm forest, jungle, or underground
Feral (Ex) Though surprisingly intelligent, feral xill have been rasied in the wild, and lack any form of society, living instead like wild beasts. A feral xill is not proficient with any manufactured weapon, doesn't use tools, and cannot speak or understand any language.
Implant (Ex) As a standard action, a feral xill can lay 2d6 eggs in a helpless creature. A feral xill's eggs hatch in 24 hours, at which point the young consume the host from within, inflicting 1 point of Con damage per hour per young until the host dies, at which point young emerge. These young are always feral xills instead of standard xills. A remove disease spell (or similar effect) rids a victim of all implanted eggs or active young, or they can be cut out one at a time with DC 20 Heal checks (each attempt takes 10 minutes). If a check fails, the healer can try again, but each attempt (successful or not) deals 1d4 points of damage to the patient.
Incubator (Ex) A feral xill can produce cocoons in which to incubate its eggs, though eggs hatched in a cocoon produce xill spawn instead of full-grown xills. Xill spawn are stunted, verminous creatures. They are mechanically identical to scarlet spiders, except they are CR 1/2, have paralysis (1d4 minutes, DC 10) in place of poison, and have the implant special attack of a feral xill. A xill spawn that uses its implant special attack dies immediately after laying its eggs. Xill spawn eggs that hatch inside a living host grow into full-sized feral xills.