Rogan by TimeLord

Level 1:
War Mastery (Q): Quest: Hit 30 enemy Heroes with Grunt active. Reward: Increase the attack speed bonus by 10%.
Absolutely Barbaric (D): Attacking enemy Structures destroys 1 Ammo per attack.
Sharp Axe: Your every 3rd basic attack deals 50% bonus damage.

Level 4:
Work Work (E): Repair also refills 2 Ammo per second.
Enthusiasm (E): Quest: Collect regen globes to permanently reduce the cooldown of Repair by 1 second, up to 10 seconds.
Raid (D): Attacking enemy Forts and Keeps grants 2 Gold per attack.

Level 7:
Draenor Armor (Q): Increases the Armor bonus of Grunt by 10.
Sharpened Spikes (W): Spiked Barricade deals 60% more damage to non-Heroes.
Vigorous Strikes: Basic attacks heal you for 20% of damage dealt.
Brute: Quest: Kill 30 Minions. Reward: Your basic attacks deal 30% more damage against non-Heroes.

Level 13:
Orcish Rush (Q): Hitting enemies while Grunt is active grants 10% movement speed for 2 seconds.
Road of Thorns (W): Reduces the cooldown of Spiked Barricade by 0.5 seconds for each enemy damaged.
All Done (E): Increases the speed of Repair to 7% of Structure's max Health per second.

Level 16:
Advanced Training (Q): Hitting enemy Heroes while Grunt is active reduces its cooldown by 1 second.
Crippling Barrier (W): Spiked Barricade now slows enemies by 60% for 1.5 seconds.
Venomous Spikes (W): Spiked Barricade deals 50% more damage over 3 seconds.

Level 20:
Improved Fortifications (R1): Orc Tower has 30% increased health and damage.
Wolftamer (R2): Increases the damage bonus by 15%. Basic attacking enemy Heroes increases the duration of Raider Training by 1 second per attack.
Repair Master (E): Repair can now also be used on the Core, at the rate of 1.5% of its max Health per second.