Snithernash (5e Creature)
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Large monstrosity, any chaotic
Squeeze. The snithernash is treated as a Small creature when determining if it can fit into a space.
Multiattack. The snithernash makes one bite attack and one claw attack. It can replace the bite attack with its Memory Slurp.
Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 9 (3d4 + 2) piercing damage.
Claw. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (2d6) slashing damage.
Memory Slurp. A creature of snithernash's choice which is within 5 feet makes a DC 11 Constitution saving throw, forgetting the past 10 (1d10 + 5) hours on a failed save. A creature which makes this save successfully is immune to the snithernash's Memory Slurp for 24 hours.
The snithernash is a soft, flexible pseudomammaloid with a tough, elastic inorganic skin and serpentine spinal column, constantly contorting and rippling with an almost weightless grace. Carnivorous, it prefers to prey on small avians, rodents and reptiles, easily pursuing prey into tight hiding spaces.