Alien (Xenomorph) (5e Creature)
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Medium monstrosity, unaligned
Saving Throws Dex +6, Str +7, Int +4
Acid Blood. An alien's blood is acid. Anything that comes into contact with it takes 28 (5d10) acid damage. Hitting an alien with slashing or piercing damage requires a successful Dexterity saving throw (DC 13) or take 28 (5d10) acid damage.
Enhanced Senses. The Alien can hear a normal conversation from 300 feet and a whisper at 80 feet.
Alien Athletics. An alien has advantage on Athletics checks. In addition, as a reaction an alien can reduce falling damage by 45 (5 times the number of Hit Dice).
Spider Climb The Xenomorph can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
Multiattack. The alien can make two attacks when attacking with its claws.
Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one creature. Hit: 22 (4d8 + 4) Piercing Damage.
Vicious Rush. Melee Weapon Attack: +7 to hit, reach 5 ft., one creature. Hit: 13 (2d8 + 4) Slashing damage. The alien violently rushes at a target up to twice its movement speed and attacks a target with its claws. Instead of dealing damage, the alien can grapple the target (escape DC 14).
Claws. Melee Weapon Attack: +7 to hit, reach 5 ft., one creature. Hit: 13 (2d8 + 4) slashing damage.
Tail. Melee Weapon Attack: +7 to hit, reach 15 ft., one creature. Hit: 22 (4d8 + 4) slashinging damage.
The Xenomorph physical form varies wildly depending on its life stage, hive caste, age and host, with numerous genetic varieties existing whose origins are completely unknown, as well as varieties which have been genetically engineered by host species or genetically grown. The typical Xenomorph starts life as an egg-like creature which, when detecting the presence of a potential host, opens up to release the second stage: a small quasi-arachnoid life form which launches itself onto the host's face and impregnates it with an endoparasitoid larva, which later consumes the host from within and exits the body as a vaguely worm-like organism, which then grows very quickly, developing into the adult Xenomorph. The adult Xenomorph is a living Killing machine, and the things that can stop them are rare and few in number.