Aidan by TimeLord

Level 1:
Flaming Strike (Q): Quest: Killing Minions with Blazing Strike increases its damage by 3. Reward: Kill 30 Minions to increase the damage by another 60.
Super Sense (D): Activate to reveal the nearest enemy Hero for 4 seconds.
Collector: Quest: Each Regen globe increases your maximum Mana by 10. Reward: Collect 20 Regen globes to increase your maximum Mana by another 100.

Level 4:
Endless Flesh (W): Each time a Flesh Beast attacks an enemy Hero, its cooldown is reduced by 0.5 seconds.
Easy Strike (Q): Reduce the mana cost of Blazing Strike by 40%.
Always to the East (E): Hitting enemy Heroes while To the East is active reduces its cooldown by 1 second.

Level 7:
Dark Warrior (E): Increase the attack speed bonus of To the East to 40%.
Flesh Tearer (W): Increase the damage of Flesh Beasts against non-Heroes by 60%.
Burn the Weak (Q): Blazing Strike deals 50% bonus damage against non-Heroes.

Level 10:
Inferno (R1): Summon a meteor for each enemy unit or structure in the area. Meteors fall after 1 second, dealing heavy damage and burning the ground for 3 seconds.
Burning Body (R2): Engulf yourself in flames, burning all enemies who attack you or who get attacked by you, for 2 seconds. You are healed for 30% of all damage you deal while this is active. Lasts 8 seconds.

Level 13:
Sharpened Senses (D): Increase the range of Sense the Darkness by 50%.
Wanderer (E): Increase the health regen of To the East by additional 5 Health per second.
Crippling Attack (W): Flesh Beasts now slow enemies by 30% for 2 seconds.

Level 16:
Dark Powers (D): Increase the damage bonus of Sense the Darkness to 6% per enemy Hero.
Wanderer's March (W): Become unstoppable while Flesh Beast is active.
Enduring Fire (Q): Blazing Strike now deals 100% damage to secondary targets as well.

Level 20:
Torment (R1): Increase meteor damage and area of effect by 20%.
Flaming Body (R2): Increase fire damage by 20%. You are now healed for 40% of damage dealt.
Red Soulstone: Gain the ability to cast Diablo's Apocalypse. Cooldown: 100 seconds.
Blazing Sweep (Q): Fire now spreads indefinitely.