Xavius by BuckSleezy

Level 1:

[Q] Nightmare Comet: (Quest) Hitting enemy Heroes increases impact radius by 1%. (Reward) After increasing radius by 30%, damage reduction reduced to 5% per Hero hit.
[Q] Redeeming Impact: Refund Mana if meteor damages a Hero.
[W] Reaching Blades: Increases cast range by 25%.
[Trait] The Lord of Nightmares: (Quest) Collecting Regen Globes increases duration of Nightmare Corruption by 0.1 seconds. (Reward) Upon reaching 3 bonus seconds, increase radius by 20%.

Level 4:

[Q] Aftershock: Nightmare Meteor leaves behind Nightmare Corruption at the impact point.
[W] Sharpened Blades: Nightmare Blades deals the 25% bonus damage to enemies with shields.
[E] Dominating Nightmare: Basic attacks and cleave deals 50% more damage to non-Heroes.

Level 7:

[W] Seeping Nightmare: Nightmare Blades spawns Nightmare Corruption.
[E] Nightmarish Momentum: Nightmare Infusion auto-attacks reduce cooldown of basic abilities by 0.5 seconds.
[Trait] Nightmare Fuel: Nightmare Corruption heals Xavius for 95 Health per second.

Level 10:

Blackening Soul
Overwhelming Terror

Level 13:

[Q] Shattered Meteor: Upon impact, Corruption Meteor will split to cause 4 smaller impacts that deal 85 (+4% per level) damage.
[E] Rage Infusion: Auto attacks against Heroes extend duration for 1 second.
[Trait] Swift Corruption: Friendly units gain 20% move speed on Nightmare Corruption.

Level 16:

[Q] Meteor Shower: Gain two charges of Corruption Meteor, but increase cooldown by 4 seconds.
[W] Shattered Armor: Enemies damaged by Nightmare Blades take 150% bonus damage from Xavius' next basic attack.
[E] Nightmare Ferocity: Increases Xavius' basic attack damage by 5% per second Nightmare Infusion is active.
[Trait] Imposing Nightmare: Enemy Basic Attacks are slowed by 30% while on Nightmare Corruption.

Level 20:

[R] Total Darkness: Affect enemy Hero received 50% reduced healing.
[R] Hysteria: Increases aura radius by 30% and chains the aura to all enemy Heroes affected by fear.
[Active] Root of Corruption: Roots of Shaladr***il burst from the ground causing all enemies standing in Nightmare Corruption to be rooted for 1 second. 30 Second Cooldown.
[Trait] Ysera's Protection: All friendly Heroes gain a shield worth 3% of their max health per second they are standing on Nightmare Corruption, maxing out at 15%. Shields are lost immediately after moving off of Nightmare Corruption.
[Trait] Total Corruption: Minions die instantly while standing on Nightmare Corruption.

(9/20/2016)
Uploaded

(10/04/2016)
1.1: Retooled Nightmare to remove slow as an effect
Nightmare Blades no longer deals bonus damage against shields and ignores shields. Now reduces cooldown if damages shielded targets.
Talent Changes:
'Nightmare Comet' Damage Reduction increased to 10%.
'Sharpened Blades' Bonus damage reduced to 25%.
'Imposing Nightmare' Added to Level 16.

(11/28/2016)
1.2: Blackened Soul no longer prevents affected hero from attacking other heroes, or gains damage reduction from other heroes.
Level 20: Total Darkness now reduces targets healing received.

(12/6/2016)
1.2.1: Corruption Meteor damage reduced to 200, damage reduction reduced to 10% per hereo
'Nightmare Comet' reward now 5% reduction.