Swarm of Poisonous Snakes

Medium swarm of tiny animals
Challenge

STR
−1
DEX
4
CON
0
INT
−5
WIS
0
CHA
−4

36
8d8
16
Fort
+1
Ref
+2
Will
−2
Damage resistances bludgeoning, piercing, slashing
Condition immunities charmed, frightened, grappled, paralyzed, petrified, prone, restrained, stunned

Speed 5 m., swim 5 m.
Skills
Senses blindsight 2 m.

Maneuvers. The swarm of poisonous snakes uses maneuvers (maneuver save Difficulty 14). It has 5 stamina dice which are d8s, a dice limit of 1, regains all expended stamina dice when it finishes a long rest, and regains half its total stamina dice when it finishes a short rest. It knows the following maneuvers:

1 stamina die: ambush, inject venom, spring attack

Swarm. The swarm can occupy another creature’s space and vice versa, and the swarm can move through any opening large enough for a Tiny creature. The swarm can’t regain health or gain temporary health.

Actions (1)

Bites. Melee Weapon Attack: +5 to hit. Hit: 11 (2d6 + 4) piercing damage, or 7 (1d6 + 4) piercing damage if the swarm has half of its health or less, plus 10 (3d6) poison damage. If the poison damage reduces the target to 0 health, the target is stable but poisoned for 1 hour, even after regaining health, and is paralyzed while poisoned in this way.

Forest, Swampsrd

Maneuvers

As an action, you can use Stealth without using an action. Additionally, before the end of your next turn, you can add the stamina die to an attack’s damage (add half on a miss by 4 or less) if you have advantage on the attack, or if the creature is within 1 meter of an enemy of the creature that isn’t incapacitated and you don’t have disadvantage on the attack.

Enhance

You can increase the damage for each additional stamina die expended.

Prerequisites: You must have a form of venom inherent to your body.

1 minute/stamina die

As an action, make a melee weapon attack with a natural weapon that deals poison damage.

On a hit, add the stamina die to the attack’s poison damage and the creature must succeed on a Fortitude saving throw against poison (Difficulty equal to 9 + your Constitution + your Aptitude Bonus) or become poisoned for the duration.

On a critical hit, add twice as much damage.

On a miss by 4 or less, add half as much damage.

The creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Enhance

You can increase the damage for each additional stamina die expended.

As an action, you can use the Dash action. If you move at least 3 meters straight toward a creature, you can make a melee weapon attack against it.

On a hit, add the stamina die to the attack’s damage.

On a critical hit, add twice as much damage.

On a miss by 4 or less, add half as much damage.

Enhance

You can increase the damage for each additional stamina die expended.