Acid Bug (5e Creature)
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Small beast , unaligned
Armor Class 14 (natural armour)
Damage Resistances acid
Toxicity. When the acid bug drops to 0 hit points, all creatures within 10 feet of it must succeed on a DC 11 Constitution saving throw or be poisoned for 1 minute.
Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) piercing damage.
Acid Spray (Recharge 6). The acid bug exhales acid in a 15-foot cone. Each creature in that area must make a DC 11 Dexterity saving throw, taking 10 (3d6) acid damage on a failed save, or half as much damage on a successful one.
Acid bugs are insects that inhabit forests and caves that tend to hunt alone. They have green carapaces with bright red markings along both sides, and they usually prey on other insects or other small animals by killing the animal, dissolving the remains with a strong acid, and eating the resulting sludge, but they can also consume plant matter in this way. They are the bane of farmers and traders, as they prey on them and destroy caravans and crops. As such, an intact acid bug shell can be worth a significant bounty in rural towns.