Conductor

Warforged Resilience. Conductor has advantage on saving throws against being poisoned and is immune to disease. Magic can't put her to sleep.

Storm Shield. Conductor is always under the effects of the mage armor spell. Additionally, whenever a creature hits Conductor with an attack it takes 2 (1d4) lightning damage.

Energy Conductor. Whenever Conductor takes lightning or thunder damage, she instead takes half damage and the next time she deals damage with a spell or attack, that spell or attack deals an extra 7 (2d6) lightning or thunder damage (Conductor's choice).

Heart of the Storm. Whenever Conductor casts a spell other than a cantrip that deals lightning or thunder damage, a stormy aura surrounds her. In addition to the spell’s effects, creatures of her choice within 10 feet of her take 5 lightning or thunder damage (Conductor's choice).

Multiattack. Conductor makes two Storm Strike attacks.

Storm Strike. Melee or Ranged Spell Attack: +8 to hit, reach 5 ft. or range 120 ft., one target. Hit: 15 (3d6 + 5) lightning or thunder damage (Conductor's choice).

Spellcasting. Conductor casts one of the following spells using Charisma as the spellcasting ability (spell save DC 16, +8 to hit with spell attacks):

At will: dancing lights, mage hand, gust, light
2/day each: lightning bolt, shatter, thunderwave
1/day each: chain lightning, control winds, ice storm

Forked Lightning (Recharge 5-6). Conductor unleashes arcs of magical lightning at up to three creatures she can see within 60 feet of herself. Each target must make a DC 16 Dexterity saving throw, taking 28 (8d6) lightning damage on a failed save, or half as much damage on a successful one.

Storm Step. Conductor and everything she is wearing and carrying teleport in a flash of lightning to an unoccupied space she can see within 30 feet of her. Each creature of her choice within 10 feet of her when she teleports takes 3 (1d6) lightning damage.

Negate Magic (Recharge 4-6). When Conductor sees a creature within 60 feet of her casting a spell, she tries to interrupt it. If the creature is casting a spell using a spell slot of 4th level or lower, its spell fails and has no effect. If it is casting a spell of 5th-level or higher, it must succeed on a DC 16 Intelligence saving throw, or the spells fails and has no effect.