Archempered "Better" Monstrous Peryton

Dive Attack. If the peryton is flying and dives at least 30 feet straight toward a target and then hits it with a melee weapon attack, the attack deals an extra 14 (4d6) damage to the target. If the target is a Large or smaller creature, it must succeed on a DC 17 Strength saving throw or be knocked prone.

Flyby. The peryton doesn't provoke an opportunity attack when it flies out of an enemy's reach.

Keen Sight and Smell. The peryton has advantage on Wisdom (Perception) checks that rely on sight or smell.

Legendary Resistance (2/Day). If the peryton fails a saving throw, it can choose to succeed instead.

Horrific Critical. If the Peryton reduces a humanoid creature to 0 HP with a critical hit, it may make a gore attack against the same target as a bonus action. On a hit, the Peryton tears out the victims heart with its teeth. Each creature within 30 feet that sees this must make a DC 15 Wisdom saving throw or be frightened until the end of the Peryton's next turn.

Multiattack. The peryton makes one gore attack and two talon attacks.

Gore. Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit: 25 (4d8 + 7) piercing damage.

Talon. Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit: 28 (2d20 + 7) slashing damage.

Warp Shadow. The peryton chooses up to three creatures within 60 feet of it that it can see. Each creature must succeed on a DC 17 Wisdom saving throw or become cursed. While cursed, whenever the creature makes an attack roll, an ability check, or a saving throw, it must roll a d4 and subtract that number from the roll. A cursed creature can repeat this saving throw at the end of each of its turns, ending the effect on itself with a success. A creature that succeeds on this saving throw is immune to this peryton's Warp Shadow for 24 hours.

The peryton can take 2 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The peryton regains spent legendary actions at the start of its turn.

Detect. The peryton makes a Wisdom (Perception) check.

Aggressive Beak Strike. The peryton makes one gore attack with disadvantage.