Medusa

Medium Monstrosity, Lawful Evil

STR
10 (+0)
DEX
17 (+3)
CON
16 (+3)
INT
12 (+1)
WIS
13 (+1)
CHA
15 (+2)

Actions

Multiattack.

The medusa makes two Claw attacks and one Snake Hair attack, or it makes three Poison Ray attacks.

Claw.

Melee Attack Roll: +6, reach 5 ft. Hit: 10 (2d6 + 3) Slashing damage.

Snake Hair.

Melee Attack Roll: +6, reach 5 ft. Hit: 5 (1d4 + 3) Piercing damage plus 14 (4d6) Poison damage.

Poison Ray.

Ranged Attack Roll: +5, range 150 ft. Hit: 11 (2d8 + 2) Poison damage.

Bonus Actions

Petrifying Gaze (Recharge 5-6).

Constitution Saving Throw: DC 13, each creature in a 30-foot Cone. If the medusa sees its reflection in the Cone, the medusa must make this save. Failure: The target has the Restrained condition and repeats the save at the end of its next turn if it is still Restrained, ending the effect on itself on a success. Failure: The target has the Petrified condition instead of the Restrained condition.

Find this creature in the encounter builder

Medusa

Source: Stranger Things: Welcome to the Hellfire Club, p. 205 - Licenses and attribution