Multiattack

The snake makes one Bite attack and one Constrict attack, or it makes two Bite attacks.

Bite

_Melee Weapon Attack:_ +6 to hit, reach 10 ft., one creature. _Hit:_ 10 (2d6+3) piercing damage.

Constrict

_Melee Weapon Attack:_ +6 to hit, reach 5 ft., one creature. _Hit:_ 12 (2d8+3) bludgeoning damage, and the target is grappled (escape DC 14). Until this grapple ends, the creature is restrained, and the snake can't Constrict another target.