Your Charisma Score increased by 2 and your Intelligence Score increases by 1.

Accustomed to life underwater, you have superior vision in dark and dim conditions. 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. You only gain this in your hybrid form. 

As an action, you sing a magical melody. A number of humanoids equal to your Charisma Score within 100 feet that can hear your song must make a Wisdom Saving Throw (DC= 8+Proficiency Bonus+Charisma Modifier) or be charmed by you until the song ends. You can use your bonus action on your following turns to continue singing the song. You can stop singing any time. Your song ends if you are incapacitated or die. 
While charmed by you, targets are incapacitated and ignore other charms. They must spend their turn walking towards you, trying to get within 5 feet of you by the shortest path possible. Charmed targets still take opportunity attacks, but can repeat the saving throw before walking into hazardous terrain. Targets can repeat their saving throw at the end of their turn.
Targets who succeed the saving throw are immune to your song for 24 hours. 

You can use this ability a number of times a day equal to your Charisma Modifier. 

Accustomed to life underwater, you can breath underwater as well as air when you surface. You only gain this in your hybrid form.

When you enter water, you can choose to transform into your true, hybrid form. While in this form you gain your darkvision, underwater breathing, and a swimming speed equal to your movement speed due to your legs merging into a tail. 

You can read, write, and speak Common and Aquan.