Lightning Affinity. When Eo uses Spellcasting to cast a spell that deals lightning damage, that spell deals an additional 5 damage. When Eo casts a spell that deals a type of damage from the following list, she can change that damage type to lightning: acid, cold, fire, poison, thunder.

Spellcasting. Eo casts one of the following spells, using Charisma as the spellcasting ability (spell save DC 17, +9 to hit with spell attacks):

At will: detect magic, detect thoughts, light, mage hand, magic missile, prestidigitation, shield, shocking grasp

1/day each: chain lightning, finger of death, power word stun, teleport, wish*

2/day each: banishment, counterspell, dominate person, fireball, lightning bolt, mirror image, misty step

* Eo uses wish to ensure she has a simulacrum of herself at all times.

Twinned Orbs. Melee or Ranged Spell Attack: +9 to hit, reach 5 ft. or range 90 ft., two targets. Hit:27 (5d8 + 5) acid, cold, fire, lightning, poison or thunder damage (Eo's choice).

Twinned Spell. Eo uses Spellcasting to cast banishment, dominate person, finger of death, or power word stun. This spell targets a second creature in range.

Discharge (1/Day). Eo emits a thin green ray at a creature within 60 feet. The target must make a DC 17 Dexterity saving throw. On a failed save the target takes 89 (14d6 + 40) force damage. If this damage reduces the target to 0 hit points, it is disintegrated. A disintegrated creature and everything it is wearing and carrying, except magic items, are reduced to a pile of fine gray dust. The creature can be restored to life only by means of a true resurrection or a wish spell.

Shocking Rebuke. As a reaction to taking damage, Eo surrounds her attacker with a coil of lightning. The target must make a DC 17 Dexterity saving throw. It takes 16 (2d10 + 5) lightning damage on a failed save, half as much damage on a successful one.