I can polymorph into any humanoid I have seen or back into my true form. My statistics, other than my size, don't change. Any equipment I'm wearing or carrying isn't transformed. I revert to my true form when I die.

Darkvision up to range of 60'

I can innately cast 'detect thoughts', requiring no components. My spellcasting ability is Intelligence. The spell's Wisdom save DC is 8 + my proficiency bonus + my Intelligence modifier.

Add Skill proficiency in Deception, Performance and Insight

You have 3 luck points. Whenever you make an attack roll, an ability check, or a saving throw, you can spend one luck point to roll an additional d20. You can choose to spend one of your luck points after you roll the die, but before the outcome is determined. You choose which of the d20s is used for the attack roll, ability check, or saving throw.

You can also spend one luck point when an attack roll is made against you. Roll a d20 and then choose whether the attack uses the attacker's roll or yours.

If more than one creature spends a luck point to influence the outcome of a roll, the points cancel each other out; no additional dice are rolled.

You regain your expended luck points when you finish a long rest.