Sporepion Sprout (5e Creature)
From D&D Wiki
Small plant, unaligned
Sunlight Sickness. While in sunlight, the sporepion has disadvantage on ability checks, attack rolls, and saving throws. The sporepion dies if it spends more than 1 hour in direct sunlight.
Sting. Melee Weapon Attack: +2 to hit, reach 5 ft., one creature. Hit: 1 piercing damage, and the target must make a DC 9 Constitution saving throw, taking 4 (1d8) poison damage on a failed save, or half as much damage on a successful one. If the saving throw is failed, the target is a host to sporepion spores. Every day, the target must make a DC 12 Constitution saving throw. After three successful saving throws the spores are dead, but if there are three unsuccessful throws the target takes 13 (2d12) piercing damage and 1d4 sporepion sprouts erupt from the target's chest cavity.
The sporepion resembles a scorpion which is covered in fungi. Often nocturnal creatures, sporepions roam the Underdark, searching for prey. These sprouts are still young, but they will grow into adults.