+2 to Charisma

+1 to any stat of choice

Persuasion and Insight

Because you emit light you gain Disadvantage on Stealth 

Ethereal is where you have no influence on the material plane, and the material plane has no influence over you. Thus you can enter through objects with no resistance. In the same way you cannot receive damage nor deal damage. Nor can you equip anything

Corporeal is when you can influence the material plane, you can touch, walk, feel and smell. And as such you can receive and deal damage. Unlike when Ethereal Ethereal you can wear and equip items .You can hover 1ft over the ground, being any higher will cause you to fall.

You can Switch Form at will, requiring 2 turns(with concentration) in combat.

AC being 11 + your charisma modifier. In other cases you can only equip light armor(proficiency in light armor), however you can equip weapons.

You have resistance against Piercing, Slashing and Bludgeoning

You have Vulnerability against Fire, Cold, Thunder, Psychic, Radiant and Lightning

You can write, read and speak common and one other language of choice.