This is a new guide but has already been tested with 90%+ winrate.

High up on the damage and tank numbers.

Able to survive and bait ridiculously hard with this build. 8 Seconds of blind in 10 seconds is amazing in a teamfight. I prefer the blind ultimate because I like teamfighting and have found its huge area fun and effective in allowing my team to get the upper hand without much effort. It also allows you to use it when you're desperate to recharge your shield which can lead to some AMAZING low health plays where you seem unkillable. Example: I was against Zag, Artanis (went someone elses random dmg build) and Tychus. We were all full health and had ultimates. I took out Artanis and Zag before their Nova came and finished me off seconds before Tychus was a goner. Charging random unexpected people can make you very hard to hit with skillshots. Using your q to dash immediately out of Zag's ult is also great.

You're a shielding fighter. Avoid CC. Use your Q to dodge abilities and slice through as many heroes as possible. Make sure you double attack after your shield is popped so it can be up most of the time. Auto attacking on anything is more important than movement so you can reduce your shield cooldown ASAP.