Multiattack

The sphinx attacks twice with its claw.

Claw

Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 17 (2d10 + 6) slashing damage.

Dispel Magic (3rd-Level; V, S)

The sphinx scours the magic from one creature object or magical effect within 120 feet that it can see. A spell ends if it was cast with a 3rd-level or lower spell slot. For spells using a 4th-level or higher spell slot the sphinx makes a Wisdom ability check (DC 10 + the spells level) for each one ending the effect on a success.

Flame Strike (5th-Level; V, S)

A column of divine flame fills a 10-foot-radius 40-foot-high cylinder within 60 feet. Creatures in the area make a DC 18 Dexterity saving throw taking 14 (4d6) fire damage and 14 (4d6) radiant damage on a failure or half damage on a success.