You learn the Minor illusion cantrip and can cast it at will an unlimited amount of times.  Charisma is your spellcasting ability for this spell.

You have Disadvantage on Strength (Athletics) and Dexterity (Acrobatics) checks made to climb. Your form requires you to use Barding armor, which is more expensive (Player's Hanbook pg. 155).

You may cast Aura of Fear 5 times/ short rest 

As a bonus action, you can move up to your speed toward an enemy of your choice that you can see or hear. You must end this move closer to the enemy than you started.

Your Constitution score increases by 2 and your Wisdom score increases by 1

May use their Fangs to deliver a bite attack with advantage and Attack: [roll]1d20[/roll] Damage: [roll](if([roll:-1:critical], =0, 0, 2{0}.expand()))[/roll]  extra poison dmg 

You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.