Common Forest Witch

Spellcasting. The witch is a 12th-level spellcaster. Its spellcasting ability is Charisma (spell save DC 15, +6 to hit with spell attacks). The witch has the following spells prepared:

Cantrips (at will): Eldritch Blast, Thunderclap, Chill Touch, Prestidigitation

1st level (4 slots): Hex, Witch Bolt, Hellish Rebuke, Command, Inflict Wounds

2nd level (3 slots): Ray of Enfeeblement, Blindness/Deafness, Vampiric Touch

3rd level (3 slots): Fear, Bestow Curse, Dispel Magic, Remove Curse

4th level (3 slots): Blight, Faithful Hound

5th level (2 slot): Mass Cure Wounds

6th level (1 slot): Circle Of Death

Legendary Resistance (3/Day). If the witch fails a saving throw, it can choose to succeed instead. 

Quarterstaff. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 3d6 + 2, bludgeoning damage

Dagger. Melee or Ranged Weapon Attack: +5 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 3d4 + 2, piercing damage.

Extra Attack. You can attack twice whenever you take the Attack action on your turn. If you cast a spell, your other attack must be either a weapon attack or a cantrip. 

The witch can take 3 legendary actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creature's turn. The witch regains spent legendary actions at the start of it's turn.

Weapon attack. The witch makes one melee weapon attack.

Teleport. The witch magically teleports, along with any equipment it is wearing or carrying, up to 60 ft. to an unoccupied space it can see.

Cast a spell (Costs 3 Actions). The witch can cast a spell from it's list of spells, using a spell slot as normal.

Heal Self (Costs 3 Actions). The witch casts Heal on itself (or on one of its allies), using a spell slot of any level.