Actions

Multiattack. The Putrescent Annelid makes two attacks; two bites, or one bite and one tail slam.

Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Wit: 10 (2d8+3) piercing damage plus 8 (1d1o+3) poison damage. A successful DC 15 Constitution saving throw halves the poison damage.

Jail Slam. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 10 (2d8+3)

Wugeoning damage.

Putrid Spew (Recharge 5-6): The Putrescent Annelid regurgitates a torrent of poisonous bile in a 15-foot cone. Each creature in that area must make a DC 15 Dexterity saving throw, taking 34 (8d8) poison damage on a failed save or half as much damage on a successful one.

Traits

Blood Drain. When the Putrescent Annelid hits a creature with its Bite attack, it may attach itself to the target. f attached, at the start of each of the Annehds turns, the target loses 7(2d6) hit points due to blood loss. Ohe Annelid regains hit points equal to half the damage dealt. A creature may attempt to detach the Annelid on their turn by using an action to make a DC 14 Strength (Athletics) check, removing the Annelid on a success.

Aggressive. As a bonus action, the Putrescent Annelid can move up to its speed toward an enemy it can detect.

Blood spray. The Putrescent Annelid has advantage on attacks made against creatures that have less than their maximum hit points.

Usual Tactics

The Putrescent Annelid prefers ambush tactics, lurking unseen in stagnant waters or shadowy pools until prey ventures too close.

• It initiates combat with Putrid Spew to weaken multiple targets simultaneously, then attempts to attach itself to the most vulnerable or isolated victim using its Bite attack.
• While attached, it prioritizes remaining so for as long as possible to drain life and restore its own health.
• If significantly injured or overwhelmed, it retreats underwater, using its swimming speed to evade pursuers.