Bristleback

The quillboars were never interested in the affairs and wars of other races, but one knew that the Scourge would eventually descend on their lands if left unchecked. Entering the ranks of the Sentinel for the sole reason of the preservation of his tribe, Rigwarl brings primal instincts to the never ending battle. Each time he releases a flurry of quills or a glob of slime, he works himself into a frenzy that increases his effectiveness drastically, and should he be in danger, his bristle back would shield him from further harm. A perfect demonstration of the abilities that even lesser beings can unleash.

HERO ABILITIES (Attack range of 100)
1.)Viscous Nasal Goo - Covers a target in snot, causing it to have reduced armor and movement speed. Casts on the same target are cumulative. Lasts 5 seconds.
2.)Quill Spray - Sprays enemy units with quills dealing damage in a 650 AoE. Deals 30 extra damage everytime a unit is struck by a quill in the last 10 seconds. Damage type is physical.
3.)Bristleback - Rigwarl covers his back in spines, causing him to take reduced damage. Automatically releases a quill spray whenever his rear receives 250 damage.
4.)Warpath - Everytime Rigwarl casts a spell, he works himself into a fury. Movement and Attack speeds increase on repeated spell casts. Lasts 10 seconds. Stacks up to 4 times.

Are you an experienced player with Rigwarl? Please leave comments below for anything you can share about items build, skills combo, strategy, etc. Thanks!