Dive Attack. If Akim is flying and dives at least 30 feet toward a target and then hits with a bite attack, the attack deals an extra 10 (3d6) damage to the target.

Keen Sight. Akim has advantage on Wisdom (Perception) checks that rely on sight.

Flyby. Akim doesn’t provoke an opportunity attack when it flies out of an enemy’s reach.

Legendary Resistance (3/day). If Akim fails a saving throw, he can choose to succeed instead.

Lord of the Flock (Mythic Trait; Recharges after a Short or Long Rest). when Akim is reduced to 0 hit points, it doesn't die or fall unconscious. Instead Akim regaints 150 hit points, mutates (using the table provided) and calls to its aid 5 Giant Eagles.

Multiattack. Akim makes two attacks: one with its bite and one with its talons.

Bite. Melee Weapon Attack: +14 to hit, reach 10 ft., one target. Hit: 35 (4d12 + 9) piercing damage. If the target is a Medium or smaller creature, it is grappled (escape DC 17). Until this grapple ends, the target is restrained, and Akim can't bite another target.

Talons. Melee Weapon Attack: +14 to hit, reach 5 ft., one target. Hit: 23 (4d6 + 9) slashing damage, and the target is grappled (escape DC 19). Until this grapple ends, the target is restrained, and Akim can't use its talons on another target.

Call the Flock (Recharge 5-6). Akim lets out a loud bellow calling for aid. 6 eagles join the combat to aid Akim.

Incite Aggression. All eagles within 120 ft. of Akim make a Talon attack.

Akim can take 3 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. Akim regains spent legendary actions at the start of its turn.

Attack. Akim makes one melee weapon attack against a target.

Drop. Akim drops one creature that it currently has grappled.

Move. Akim moves up to its speed.

If Akim's mythic trait is active, it can use the options below as legendary actions for 1 hour after using Lord of the Flock.

Screech. Akim lets out a loud cry. All hostile creatures within 60 feet of it must make a DC 19 Constitution saving throw or be deafened for 1 minute. A deafened creature can repeat the saving throw on each of its turns, ending the effect on itself on a success.

Terrifying Glare. Akim targets one creature it can see within 60 feet of it. If the target can see Akim, the target must succeed on a DC 14 Wisdom saving throw or be magically frightened until the end of Akim's next turn.

Call the Eagles (1/round). Akim calls for aid and one Eagle joins the combat to assist Akim.