Androsphinx

Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 17 (2d10 + 6) slashing damage.

Melee Attack Roll: +12, reach 5 ft. Hit: 20 (4d6 + 6) Slashing damage.

Each creature that fails a DC 18 Wisdom saving throw is frightened for 1 minute. A frightened creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Wisdom Saving Throw: DC 20, each enemy in a 500-foot Emanation originating from the sphinx. Failure: The target has the Frightened condition for 1 minute. Second Roar. Wisdom Saving Throw: DC 20, each enemy in a 500-foot Emanation originating from the sphinx. Failure: The target has the Paralyzed condition, and it repeats the save at the end of each of its turns, ending the effect on itself on a success. After 1 minute, it succeeds automatically. Third Roar. Constitution Saving Throw: DC 20, each enemy in a 500-foot Emanation originating from the sphinx. Failure: 44 (8d10) Thunder damage, and the target has the Prone condition. Success: Half damage only.

The sphinx makes two claw attacks.

The sphinx makes two Claw attacks and uses Roar.

The sphinx emits a magical roar. Each time it roars before finishing a long rest, the roar is louder and the effect is different, as detailed below. Each creature within 500 feet of the sphinx and able to hear the roar must make a saving throw.

The sphinx emits a magical roar. Whenever it roars, the roar has a different effect, as detailed below (the sequence resets when it takes a Long Rest):

The sphinx is immune to any effect that would sense its emotions or read its thoughts, as well as any divination spell that it refuses. Wisdom (Insight) checks made to ascertain the sphinx’s intentions or sincerity have disadvantage.

No magic can observe the sphinx remotely or detect its thoughts without its permission. Wisdom (Insight) checks made to ascertain its intentions or sincerity are made with Disadvantage.