- 11 (7,200 XP)
Dashing Strike. If the behir uses its action to Dash, it can use a bonus action to make one melee weapon attack or shove a creature.
Multiattack. The behir makes two attacks: one with its bite and one to constrict.
Bite. Melee Weapon Attack: +10 to hit, reach 3 m. Hit: 22 (3d10 + 6) piercing damage.
Constrict. Melee Weapon Attack: +10 to hit, reach 1.5 m., one Large or smaller creature. Hit: 17 (2d10 + 6) bludgeoning damage plus 17 (2d10 + 6) slashing damage. The target is grappled (escape DC 16) if the behir isn’t already constricting a creature, and the target is restrained until this grapple ends.
Lightning Breath (Recharge 5–6). The behir exhales a line of lightning that is 6 meters long and 1.5 meters wide. Each creature in that line must make a DC 16 Reflex saving throw, taking 66 (12d10) lightning damage on a failed save, or half as much damage on a successful one.
Swallow. The behir makes one bite attack against a Medium or smaller target it is grappling. If the attack hits, the target is also swallowed, and the grapple ends. While swallowed, the target is blinded and restrained, it has total cover against attacks and other effects outside the behir, and it takes 21 (6d6) acid damage at the start of each of the behir’s turns. A behir can have only one creature swallowed at a time.
If the behir takes 30 damage or more on a single turn from the swallowed creature, the behir must succeed on a DC 14 Fortitude saving throw at the end of that turn or regurgitate the creature, which falls prone in a space within 3 meters of the behir. If the behir dies, a swallowed creature is no longer restrained by it and can escape from the corpse by using 4.5 meters of movement, exiting prone.