Off tank build (use formidable with it if you want self heal)
for third and fourth item, decide basing on the match's flow
Increase your Movement Speed by 40% for 3s after using Charge.
Increase your Movement Speed by 32% for 3s after hitting an enemy with Fireball.
Increase your Movement Speed by 32% while using Shield.
Apply a Knockback of 200 to enemies hit by Charge.
Increase the travel distance of Charge by 30%.
Gain 21% Movement Speed.
Your weapon shots reduce the effect of healing on your target by 75% for 1.5s.
Heal for 55% of your maximum Health over 3s when you fall to or below 40% of your maximum Health. This can occur once every 45s.