Urzael by BuckSleezy

Level 1:
[Q] Conflagration: Increases radius and damage of Cannonball splash by 25%.
[W] Redeeming Swing: Removes Mana cost of Fiery Swing if it hits a hero.
[Passive] Swiftness of Death: Increases move speed bonus to 25%.
[Passive] Reap: (Quest) Gain 0.2 attack damage per minion killed and 0.5 attack damage per hero killed. Upon reaching 30 bonus attack damage, basic attacks deal 50% damage as splash to nearby targets.

Level 4:
[Q] Angelic Black Powder: Increases travel speed and lowers mana cost of Cannonball by 20.
[W] Spiked Cannon: Increase damage of Fiery Swing to non-Heroic targets by 200%.
[W] Hindering Strike: Heroes damaged by Fiery Swing are slowed by 30% for 1.5 second.
[Passive] Vital Shot: Every third consecutive Basic Attack against a target heals Urzael for 150% of damage dealt.

Level 7:
[Q] Phantom Cannon: Cannonball ignites the ground, dealing 35 (+4% per level) damage per second, effect lasts for 3 seconds.
[W] Empowering Swing: Next Basic attack to Heroes damaged by Fiery Swing within 4 seconds is increased by 60%.
[E] Rocket Jump: Removes cast time and lowers cooldown by 4 seconds.

Level 10:
Breath of Flame
Rain of Fire

Level 13:
[Passive] Death's Fury: Basic Attacks while Rage of Death is active deal an additional 2% of a Heroes maximum health.
[Q] Fully Loaded: Gain two charges of Cannonball, but increase cooldown by 2 seconds.
[E] Heavy Landing: Increases impact area of Blazing Leap by 25%.
[E] Defensive Landing: Reduce the next Ability damage by 90% upon landing.

Level 16:
[Q] Reaper's Cannon: Cannonball deals an additional 50% damage if only one target is hit.
[W] Furious Blows: While Rage of Death is active, Fiery Swing has a 0.5 second cooldown.
[E] Concussive Force: After 1 seconds, Blazing Leap damages the target area again, dealing 50% damage.
[Passive] Unending Rage: Rage of Death persists until Urzael is restored to 60% health.

Level 20:
[R] Flame Tongue: Increases width by 50% and duration by 1 second.
[R] The Roof is on Fire: Rain of Fire increases to 7 shots and travels 50% faster.
[Passive] Raging Frenzy: While Rage of Death is active, increase basic attack speed bonus to 30%.
[Passive] Resolve of Death: Become resistant upon activation of Rage of Death reducing all incoming damage by 50% for 3 seconds.

1.1: Retooled Breath of Flame to deal more damage if it hits more enemies, but less if hitting less enemies.
Removed Seasoned Marksman, added the talent Reap to Level 1.
Removed Vampiric Assault, added Vital Shots to Level 4.
Removed First Aid from Level 7.
Removed Giant Killer/Spell Shield, added talents Death's Fury and Defensive Landing to Level 13.
Removed Stone Skin from level 16.

1.2: Changed 'Reap' Quest reward to grant basic attack splash damage.

(10/6/2016)
1.3: Cleaned up 'Vital Shot' and 'Empowering Swing' text to improve clarity of talent effects.
Level 4: 'Angelic Black Powder' no longer reduces cooldown. Instead reduces mana cost.
Level 13: 'Fully Loaded' now increases charge cooldown by 2 seconds.
'Heavy Landing' impact area reduced to 25%.
Level 16: 'Concussive Force' no longer stuns, instead causes second explosion for 50% damage.