FEEL THE HATRED

Unending Hatred continues indefinitely, so if Illidan manages to farm exceptionally while achieving kills or assists; his attack damage will improve his chances of defeating enemies greatly. Friend or Foe increases his Dive range by 20% and allows him to dive to an ally. This -greatly- improves his survivability, allowing him to dash to an ally when the situation gets tough or to catch an escaping enemy. I believe Thirsting Blade is an absolute must. Half of damage dealt by auto attack heals him. This stacks with Unending Hatred and Nexus Blades. The Hunt deals damage, stuns, and allows Illidan to immediately join the fray. Nimble Defender too increases his survivability when engaging numerous opponents by decreasing the amount of damage taken overall by 25%. Blades of Azzinoth does seem incredible, but imagine trying to hit the same enemy four times in a row without attacking anything else. That cripples Illidan. Marked for Death assures the damage, and its scaling is awesome. It also helps defeating enemies when auto-attacking fails.