Hercules Steals the Show [Arena][S4]

High sustain, good damage, tanky, high mobility, max cooldown.

At first back, complete boots before completing breastplate.
Max your 1 then your 3. Take advantage of Shield of Regrowth early in the game for movement speed with your 3. An useful sprint for aggression (setting up your 2) and to retreat.

So basically, you throw your 2 on an enemy to knock up him back at you, than you 1 him to stun and throw your ultimate in his face (optional). With good timing on the 2, you get easy kills. Herc got good CC that makes awesome fight engagement and provides kills to your teammates.

Maximizing your 3 second and max cooldown provides this build unbelievable sustain. You can engage and retreat many times in many fights before having to return to base and you become enemy's team worst nightmare.

Items order here is optimized IMO. Shogun's gives you attack speed (you count as an nearby allies) and then you build Qinn's Sais for some more attack speed and penetration to shred other warriors and guardians. Finishing up with Masamune is the cherry on the top. Provides some more health, power, movement speed with a good defense passive. Building Masamune tier 2 instead of silver breastplate at start isn't a good idea IMO because the mana and early cooldown provided by getting Breastplate first is far superior to Masamune impact.