Archfey, Stage 1

Boons:
• Fey Form. Your Charisma score increases by 2 and your Dexterity score increases by 1. An ability score cannot be increased beyond 20 this way. Your creature type becomes Fey, however, you’re immune to effects that only affect a creature of your new type of a specific CR. When you gain this ability, you must also choose which Fey court fuels your transformation. Choose one of the following:

The Summer Court. The summer court embodies the bounty and warmth of the growing season. The fey of summer tend towards joviality, fickleness, and vanity. Creatures of summer often hide their cruel intentions behind beautiful facades.
The Winter Court. The winter court embodies the stillness and darkness of the coldest season. The fey of winter tend to be serious, cruel, and reflective. Creatures of winter are often terrifying to behold but very direct about their intentions.

• Twilight Step. As a bonus action, you can magically teleport up to 30 feet to an unoccupied space you can see. Your twilight step also gains an additional feature depending on which court you chose for your Fey Form ability.

Summer. Immediately after using your Twilight Step, one creature of your choice that you can see within 5 feet of you takes fire damage equal to your Charisma modifier (minimum of 1 damage).
Winter. Immediately after using your Twilight Step, one creature of your choice that you can see within 5 feet of you takes cold damage equal to your Charisma modifier (minimum of 1 damage).

You can use the Twilight Step feature a number of times equal to your Charisma modifier (minimum of once). You regain all expended uses when you finish a long rest.

Flaw.
Planar Binding. Your body and soul are bound to a divine plane of existence. You have disadvantage on death saving throws as the plane attempts to pull you back to it. If you would be killed, your soul has been taken back to a plane of existence of the GM’s choice. This plane is your new home, and you become an NPC under the GM’s control. If you are in the Feywilds, this flaw has no effect.