Agile. The rat doesn't provoke Opportunity Attacks when it moves out of an enemy's reach.
Death Burst. The rat explodes when it dies. Constitution Saving Throw: DC 9, each creature in a 5-foot Emanation originating from the rat. Failure: 1 Acid damage.
Bite. Melee Attack Roll: +2, reach 5 ft. Hit:1 Piercing damage.
Corrupted by a malevolent ex-adventurer's magic, the rats of Elmshire are mottled and sickly. Their organs glow and bubble beneath their scabby hides as if ready to pop. These pests sometimes gather in squeaking tides, devouring everything in their path.