Bite

Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) piercing damage. The target makes a DC 15 Constitution saving throw taking 28 (8d6) poison damage on a failure or half damage on a success.

Hypnotic Pattern (3rd-Level; V, Concentration)

A swirling pattern of light appears at a point within 120 feet of the naga. Each creature within 10 feet of the pattern that can see it makes a DC 14 Wisdom saving throw. On a failure the creature is charmed for 1 minute. While charmed the creature is incapacitated and its Speed is 0. The effect ends on a creature if it takes damage or if another creature uses an action to shake it out of its daze.

Lightning Bolt (3rd-Level; V)

A bolt of lightning 5 feet wide and 100 feet long arcs from the naga. Each creature in the area makes a DC 14 Dexterity saving throw taking 28 (8d6) lightning damage on a failure or half damage on a success.

Blight (4th-Level; V, Concentration)

The naga targets a living creature or plant within 30 feet draining moisture and vitality from it. The target makes a DC 14 Constitution saving throw taking 36 (8d8) necrotic damage on a failure or half damage on a success. Plant creatures have disadvantage on their saving throw and take maximum damage. A nonmagical plant dies.