Giant Tardigrade (5e Creature)
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Large beast, unaligned
Saving Throws Str +7, Con +9
Undying A tardigrade can be weakened by pressure and cold, but cannot be killed outright by them. When the tardigrade is reduced to 0 hit points by cold or bludgeoning damage, it is reduced to 1 hit point instead.
Stasis When the tardigrade is reduced to 0 hit points, it may make a constitution saving throw with a DC of 8 + 1 for every 5 points of damage it took from the attack or spell that reduced it to 0 hit points. If it succeeds, instead of dying, it falls Unconscious and is stabilized. It regains 92 hit points after 1 hour.
Multiattack. The tardigrade makes four attacks with its claws or two attacks with its claws and one with its bite.
Claw. +7 to hit, reach 5 ft., one target. Hit: 7 (1d6 + 4) slashing damage.
Bite. +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) piercing damage, and the target is Grappled (escape DC 17). Until this grapple ends, the creature is Restrained, and the tardigrade can't bite another target.
The tardigrade is a microscopic creature known for its sheer endurance in the face of the elements, as a creature that is as close to immortality as a being can reach without magic. A mage's permanent spell of enlargement, however, caused a small group of tardigrades to grow to tremendous sizes. These terrifying beasts killed their creator and sought out homes that could fit their new forms. Now, descendants from the original giant tardigrades lurk in deep, damp, mossy caverns, ready to kill, but never to be killed.