37-22 MK IV by Elektrophorus

Level 1
(D) Pinpoint EMP: Can now manually activate EMP Shockwave to burn four times X mana from the target. Short range. 30 second cooldown.
(Z) Blast-Off: Lift-Off now last 4 seconds.
EMP Storm: Increases the radius of EMP Shockwave by 50% and causes it to drain 1 ammo from enemy structures each pulse.
Titan Reactor: Health globes also grant mana.

Level 4
(W) Deploy Firebat: Increases the cooldown of Deploy Reinforcements by 2 seconds, but also spawns a Firebat. Firebats deal area damage in a short range. Firebats are effective versus minions.
(E) Global Presence: Reduces the cooldown of Point-Defense Drone by 15 seconds.
(Z) Cloaking Field: When you cast Lift-Off, you become stealthed for 5 seconds. Damage doesn't break this stealth for the first 2 seconds.
Reinforced Matrix: Increases the effectiveness of the shields placed on Adjutant by 300%. This includes Defensive Matrix.
(Secondary) Healing Ward

Level 7
(W) Deploy Marauder: Increases the cooldown of Deploy Reinforcements by 2 seconds, but also spawns a Marauder. Marauders throw grenades that deal additional siege damage.
(E) Tractor Beams: Point-Defense Drones now gain an auto-attack that fires a beam at the target, slowing them by 30% for 1 second.
(E) Hi-Sec Auto-Tracking: Point-Defense Drones are now permanently stealthed and their vision radius is increased by 20%.
(Secondary) Calldown: MULE
(Secondary) Scanner Sweep: Reveals the targeted area for 10 seconds and all stealthed enemies as long as they remain in it. Unlimited range. 30 second cooldown.

Level 13
(Q) Dynamic Matrix: Adjutant can now move while channeling Defensive Matrix. Lift-Off no longer automatically cancels Defensive Matrix.
(Secondary) Shrink Ray
Detector: Adjutant's auto-attacks reveal the target for 4 seconds. Point-Defense Drones reveal enemies that pass within melee range of them for 4 seconds.
Spell Shield

Level 16
(Q) Fractal Shield: Reduces the pulse time of Defensive Matrix to 1 second. Expired shields can be retained indefinitely for a maximum of 50% their original value.
(W) Infantry Armor: Deploy Reinforcement summons have 25% additional health.
(Z) Fuel Efficiency: Reduces the cooldown of Lift-Off by 15 seconds.
Static Field: EMP Shockwave pulses also reduce enemy heroes' current health by 2%.

Level 20
(R) Intensity: Increases the radius of Irradiate by 40%. The slow now spreads to nearby enemies, lasting 1 second.
(R) Planetary Overload: Planetary Fortress can now charge up to 3 additional seconds to increase the damage dealt by its next shot by up to 150%.
(Secondary) Bolt of the Storm
(Secondary) Storm Shield

Adjutant is designed to be a Specialist hero with an emphasis on support. Her abilities allow her to set up sentries for vision to allow her to push up to the front lines more fearlessly. Since she isn't designed to engage in fights alone, it is important for her to know when to draw back. Point-Defense Drone was designed as a unique utility that directly alerts her and her allies to roaming enemies.

She can be built with a sole focus on Deploy Reinforcement, causing it to summon up to 4 heavy units that excel at pushing a single lane, while many of her other abilities can help wear down towers. Defensive Matrix makes tower fire less effective and soaks up large amounts of ammo.

She can also be upgraded to act like a counter to Nova / Zeratul if your team is too squishy. Her Point-Defense Drones can be really annoying, as they can be upgraded multiple times to really foil your roaming plans. Her Planetary Fortress ability can be really scary to have blast you while you engage and she runs away.

Another build can be to support allies in teamfights. While her shields are nowhere as potent as Tassadar's, they are generated over a larger range and can be refreshed indefinitely if you are not bursted down. Since she can't attack while channeling, Static Field and Planetary Fortress were designed to passively weaken your enemies. Think Chen's improved trait and Li-Li's cloud serpent. Pinpoint EMP can be picked early game to harass healers and mages. Irradiate can be chosen as a zoning talent that supports highly mobile assassins.

Depending on necessity, multiple talent tiers have options that boost her own survivability, such as Reinforced Matrix or Spell Shield.

While she may seem very similar to Zagara at first, her biggest differences are that (1) she has less potential for fighting enemies alone, (2) she doesn't have AoE damage, and (3) her vision is more versatile but less widespread.