Balathos, the Void Scion

This one was designed with tertiary resources in mind, along the lines of Visage's soul charges. Balathos is a semicarry who scales pretty well, and can become pretty scary if allowed to snowball. Anyway, without further ado let's get into it.

The times of the Mad King Archronicus are shrouded in legend, making difficulties for any historian studying the tyrant and his court. A few facts are, however, most definite; that the people rose in revolution from their insane overlord, and that he was torn apart by the demons he summoned, bound forever in a stone prison. But that is another story.

When Highlord Endeton came to claim the palace in the name of the revolution, he was merciless in dealing with Archronicus' court. Courtiers, generals, sorcerers and even jesters were executed. All was unclean; all must be purged. However, one remained behind after these troubled times, Archronicus' astromancer and Warlock Lord: Balathos. How Balathos bargained his freedom is unknown, but it is almost certain that the Mad Moon, hovering menacingly above all, was involved. Balathos lost his titles and position, but he laboured secretly to unknown ends in hidden laboratories under Endeton's palace.

And there, his tale merely ends. The last writings of his found speak of an 'event horizon' upcoming, and from then on is silence. Balathos disappears from history, and this unresolved mystery lingers to the present. Still, when the Mad Moon broke and shattered Endeton's rebuilt kingdom forever, the falling Ancients were not the only lights in the sky…

Dire Intelligence
Semicarry, Nuker, Disabler

Stats:
Base Health: 454
Base Mana: 299
Base Armour: 2
Base Damage: 45-59
Base Attack Time:
Range:
Movement Speed:
Sight: 1800/800

Strength: 16 + 1.5 (54)
Agility: 21 + 2 (71)
Intelligence: 23 + 2.5 (86)

Secondary Resource: Dark Stars. Dark Stars are granted by Balathos' abilities and consumed while in Void Soul. Balathos can store a maximum of 40 Dark Stars.

Q: Night Storm
Affects: Enemy units
Damage: Magical
Pierces Spell Immunity: No
Balathos strikes the enemy with a blast of darkness, dealing damage and generating 3 Dark Stars.
Damage: 60/110/160/210
Mana Cost: 70
Cooldown: 6
Void Soul transforms this ability into Demon Storm.
Balathos strikes the enemy with powers of purest night, dealing massive damage. Each Demon Storm amplifies consecutive Demon Storms, increasing the damage by 30% and the cost by 100%.
Damage: 70/140/210/280
Dark Star Cost: 3
Cooldown: 3

W: Chain Darkness
Affects: Enemy units
Damage: Magical
Pierces Spell Immunity: No
Foul energies erupt from Balathos, striking one target and bouncing to others. The primary target is also stunned for a short duration. Generates 2 Dark Stars.
Damage: 75/140/205/270
Stun Duration: 1.25/1.5/1.75/2
Bounces: 1/2/3/4
Mana Cost: 80/100/120/140
Cooldown: 11
Void Soul transforms this ability into Dark Scythe.
Balathos calls forth a beam of anti-matter to smite enemies in a cone in front of him. Deals tremendous Pure damage, and slows all enemies hit.
Damage: 120/200/280/360
Slow: 50%
Slow Duration: 1.5
Dark Star Cost: 6
Cooldown: 25

E: Star Tap
Balathos consumes a stored Dark Star to heal him.
Heal: 2%/2.5%/3%/3.5% of maximum Health
Mana Cost: 7
Cooldown: 0.5
Void Soul causes this ability to also restore 2% of Balathos' mana.

Ultimate: Void Soul
Balathos succumbs to his power, becoming a malevolent creature of the Mad Moon's energy. While in this form, his spells pierce Spell Immunity, and his armour and Health regeneration is increased. In addition, the functionality of his spells changes and he gains the Void Presence passive. Costs one Dark Star to activate.
Bonus Regeneration: 15/25/35
Bonus Armour: 4/7/10
Cooldown: 5

Since this part of the forum's been dead for a bit and this hasn't seen any love... bump? I thought this was a pretty interesting concept.

MAKE IT PRETTY YOU SCRUB

The Dark Star system is insightful. To me, the delight of this hero 60% comes from this alone, and 40% from how you tweak it. I want to discuss about the tweak and to clarify some things.

Q and E are not standard thanks to Dark Star and the ultimate. So - sorry for this silly metaphor - they are like an average steak with very delicious seasoning. Abilities that are quite similar but delicious in any way, let's say, Ezalor's illuminate and his ulti. It's fun and original, and the ultimate just simply add the fun. My point, perhaps they can be improved.

R is just one of Dark Star's bread n butter, so yeah, it's irreplaceable.

I don't quite understand the ulti. Do you actually mean "cost 1 Dark Star per second?" If that's the case, that's just... wow.