Al'Akir by Prototypetwo

Level 1:
a) [Q] Lightning Strike's size is increased 25%.
b) [W] Gusting Winds refunds 33% of its cost and cooldown if it impacts a hero.
c) [E] Thunderstorm deals 33% increased damage against targets at its edge.
d) [D] Stormlings charge up faster (in 6 seconds), and last longer (up to 8 seconds).

Level 4:
a) [Q] Lightning Strike leaves latent energy on all targets for 3 seconds; the next time an ally damages the target, the enemy is damaged and the energy is removed.
b) [Q] Lightning Strike energizes Al'Akir, granting 50% movement speed, diminishing over 2 seconds.
c) [W] Gusting Winds slows enemies 40% for 2 seconds after pushing them aside.
d) Gathering Power

Level 7:
a) [E] Thunderstorm deals instant damage on cast per target in the area (up to 10).
b) [W] Gusting Winds damage increased 50%.
c) [E] Thunderstorm cast range and radius increased 25%.
d) [D] When a Stormling fully charges, Al'Akir's next basic attack deals 75% increased damage.

Level 13:
a) [Q] Lightning Strike deals 33% increased damage to direct targets.
b) [E] Thunderstorm deals a burst of area damage if it reaches its full duration.
c) [W] Gusting Winds leaves a small pressurized zone, preventing enemy re-entry.
d) [D] Al'Akir's and his Stormlings' basic attacks against heroes deal bonus damage equal to 1% of the hero's maximum health. [Giant Killer variation]

Level 16:
a) [Q] Lightning Strike empowers all active stormlings, increasing their attack speed and granting a temporary shield.
b) [W] Gusting Winds summons 3 stormlings instead of 1.
c) [Q] Lightning Strike stuns targets affected by Thunderstorm for 0.75 seconds.
d) [D] Generate a stormling automatically every 8 seconds.

Level 20:
a) [R1] Static Shock deals 25% more damage, and no longer requires casting (but has the same delay until the damage occurs).
b) [R2] Squall Line damage and width increased 50%.
c) Arcane Power
d) Bolt of the Storm

As Al'Akir:

1) Consider dipping in and out of combat, casting abilities together to generate Stormlings simultaneously. This, combined with Stormling talents, can lead to high single target damage otherwise uncharacteristic of Al'Akir.

2) While they are strong individually, Lightning Strike and Gusting Winds have synergy against teams hiding behind a tank: knock the backline apart and unleash a full-damage Lightning Strike.

3) Al'Akir can force difficult decisions for the enemy team by combining Thunderstorm and Static Shock--to spread out, or stand together. With a friendly Al'Akir, capitalize on enemy indecision.

Against Al'Akir: 

1) Al'Akir has limited crowd control and no movement abilities (until possibly Bolt of the Storm). He is vulnerable alone. 

2) Al'Akir's damage has great counterplay--hide behind allies to reduce Lightning Strike damage, spread out against Thunderstorm, and stack together against Static Shock. But beware an Al'Akir who chains these effects.

Health: 780 (+130 per level)
Health Regen: 1.6 (+0.25 per level)

Mana: 500 (+10 per level)
Mana Regen: 3 (+0.1 per level)

Damage: 36 (+8 per level)
Attacks per second: 1.2
Range: 5.5