Three-headed Cobra

Large monstrosity, Unaligned

Armor Class

16 (natural armor)

Hit Points

127 (15d10+45)

Speed

walk 40 ft., swim 30 ft.

Saves

Dex +7, Wis +3

Skills

Perception +3

Damage Resistances

poison

Senses

blindsight 10 ft.

Challenge

5

Reactive Heads

The three-headed cobra gets two extra reactions that can be used only for opportunity attacks.

Three-headed

The cobra has advantage on Wisdom (Perception) checks and on saving throws against being blinded, charmed, deafened, frightened, stunned, and knocked unconscious.

Wakeful

While the three-headed cobra sleeps, at least one of its heads is awake.

Actions

Multiattack

The three-headed cobra makes three bite attacks.

Bite

Melee Weapon Attack: +7 to hit, reach 15 ft., one target. Hit: 7 (1d6 + 4) piercing damage and the target must make a DC 15 Constitution saving throw, taking 7 (2d6) poison damage on a failed save, or half as much damage on a successful one.