SCP-682 (5e Creature)
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Large monstrosity, chaotic evil
Saving Throws Cha+7 Dex+9
Adaption. SCP-682 can adapt to anything after getting hit by an attack. As a reaction after getting hit by a damage type SCP-682 can adapt gaining resistance for 1d4 rounds after which it gains immunity for up to 1 week. It can have up three different immunities at a time besides poison. If SCP-682 tries to get a fourth immunity the oldest immunity goes away. SCP-682 can spend 1 immunity to escape magical confinement.
Keen Senses. SCP-682 has advantage on Wisdom (Perception) checks that rely on sight, hearing, or smell.
Regeneration. SCP-682 regains 15 hit points at the start of its turn if it has at least 1 hit point.
Magic Resistance. SCP-682 has advantage on saving throws against spells and other magical effects.
Amphibious. SCP-682 can breathe any gas or liquid.
Magic Weapons. SCP-682 weapon attacks are treated as magical to overcome Immunities and Resistences.
Rejuvenation. If it dies, the big reptile returns to life in 3d6 hours and regains all its hit points. Only a wish spell can prevent this trait from functioning.
Multiattack.SCP-682 can use Frightful Presence followed by 4 attacks 1 bite, 1 tail, and 2 claws
Bite. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 33 (6d8 + 6) piercing damage. SCP-682 regains hit points equal to half of the damage dealt.
Tail. Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit: 28 (4d10 + 6) bludgeoning damage.
Claws. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 20 (4d6 + 6) slashing damage.
Frightful Presence. Each creature of the SCP-682's choice that is within 100 feet of him and aware of him must succeed on a DC 15 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to SCP-682's Frightful Presence for the next 24 hours.
SCP-682 is a large, vaguely reptile-like creature of unknown origin. It appears to be extremely intelligent. SCP-682 appears to have a hatred of all life, which has been expressed in several interviews during containment.
SCP-682 has always been observed to have extremely high strength, speed, and reflexes, though exact levels vary with its form. SCP-682's physical body grows and changes very quickly, growing or decreasing in size as it consumes or sheds material. SCP-682 gains energy from anything it ingests, organic or inorganic. Digestion seems to be aided by a set of filtering gills inside of SCP-682's nostrils, which are able to remove usable matter from any liquid solution, enabling it to constantly regenerate from the acid it is contained in. SCP-682's regenerative capabilities and resilience are staggering, and SCP-682 has been seen moving and speaking with its body 87% destroyed or rotted.