The witch or hag blood in your veins has been activated by contact with an eldritch entity, a life threatening or traumatic experience.  

Witch blooded.

You can speak, read, and write Druidic. 
You know the find familiar spell, this does not count against your spells known or prepared. 
Your connection to the natural path of the witch grants you access to the Druid spell list. 
You are proficient with the herbalism kit. 

Witchcraft spells.

Starting at 1st level, you learn additional spells when you reach certain levels in this class, as shown on the Witch spells table. Each of these spells counts as a sorcerer spell for you, but it doesn't count against the number of sorcerer spells you know.

Whenever you gain a sorcerer level, you can replace one spell you gained from this feature with another spell of the same level.

1st bless, bane.

3rd Zone of truth, spiritual weapon

5th bestow curse, animate dead

7th death ward, banishment

9th raise dead, scrying

 

Poppet crafting

At 6th level, you learn to craft poppets.

In order to craft a poppet, you need a piece of a creature, hair, finger nails, etc. and 10 minutes per poppet, you can craft a number of poppets up to your proficiency bonus per short rest.

With a poppet in hand you can do one of the following as an action.

 

• Cast a spell as if you were in the creatures location, including spells with the target self.
• Use the poppet as material for casting the scrying spell, the creature has disadvantage on the saving throw to resist.
• Stab the poppet with a needle to cause 2D8 damage, up to your proficiency bonus times until it falls apart.
• Destroy the poppet to cast cure wounds on the target.

Regardless of what you do with the poppet, any poppet can only be used up to your proficiency bonus of times before falling apart.

Baleful polymorph

At 14th level you can cast polymorph a number of times equal to your proficiency bonus per long rest.

If you have a poppet of the creature you’re casting polymorph on they receive disadvantage on this saving throw.

Hag form

At 18th level you can once per day assume the form of a night hag.

While you’re in the night hag form, your ability scores are replaced by the night hags, you can maintain this form a number of minutes per day equal to your proficiency bonus.