Death Bite. The snake can, on an attack that hits, add 2d8 necromantic damage to the attack. After doing this, the snake must wait a round before attacking again.
Bite. Melee Weapon Attack: d20+5 to hit, reach 5 ft., one target. Hit: d4+3 piercing damage plus 2d6 poison damage. The target must make a DC 10 Constitution saving throw, taking the poison damage on a failed save, or half as much damage on a successful one.