Aquilla

Keen Hearing and Smell. Aquilla has advantage on Wisdom (Perception) checks that rely on hearing or smell.

Pack Tactics. Aquilla has advantage on an attack roll against a creature if at least one of Aquilla's allies is within 5 feet of the creature and the ally isn't incapacitated.

Snow Camouflage. Aquilla has advantage on Dexterity (Stealth) checks made to hide in snowy terrain.

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

 Multiattack. Aquilla makes one gore attack and one talon attack Or one bite attack and one talon attack Or one talon attack and one cold breath attack(only if cold breath is not recharging)

Gore. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage.

Talons. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 8 (2d4 + 3) piercing damage

Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) piercing damage. If the target is a creature, it must succeed on a DC 14 Strength saving throw or be knocked prone.

Cold Breath (Recharge 5-6)  Aquilla exhales a blast of freezing wind in a 15-foot cone. Each creature in that area must make a DC 12 Dexterity saving throw, taking 18 (2d8) cold damage on a failed save, or half as much damage on a successful one.