Magic Resistance. Berlain has advantage on saving throws against spells and other magical effects.
Spellcasting. Berlain is an 18th-level spellcaster. Her spellcasting ability is Intelligence (spell save DC 17, +9 to hit with spell attacks). Berlain can cast disguise self and invisibility at will and has the following wizard spells prepared:
Cantrips (at will): fire bolt, light, mage hand, prestidigitation, shocking grasp
1st level (4 slots): detect magic, identify, mage armor*, magic missile
2nd level (3 slots): detect thoughts, mirror image, misty step
3rd level (3 slots): counterspell, fly, lightning bolt
4th level (3 slots): polymorph, fire shield, stoneskin*
5th level (3 slots): cone of cold, scrying, wall of force
6th level (1 slot): globe of invulnerability
7th level (1 slot): teleport
8th level (1 slot): mind blank*
9th level (1 slot): time stop
*Berlain casts these spells on herself before combat.
Dagger. Melee or Ranged Weapon Attack: +6 to hit, reach 5 ft. or range 20/60 ft., one target. Hit:4 (1d4 + 2) piercing damage.
Fused Form. As a bonus action, Berlain can use her extra mouth and arms to cast any cantrip she has prepared.
A little over a year ago, Berlain and her brother Korva briefly entered the Far Realm, whereupon they became fused into a single physical form. This merging obliterated most of Korva's body and personality, leaving Berlain with an extra mouth and an extra set of arms that once belonged to her brother. She also inherited a few of his internal organs and personality traits. She can speak using one or both of her mouths.