One Bar PvP Bowden - Warden Build - ESO

Update 45: Keep your health below 30k to trigger the Piercing Cold passive, granting an 8% damage boost. The Frost Enchantment helps activate this passive while also applying the Chilled status effect. 

Aerie's Cry applies a DoT and increases the damage of Animal Companion skills by 10%, boosting Cutting Dive and Deep Fissure.

Oakensoul Ring (the "one ring to rule them all") to limit yourself to one bar, eliminating the need for constant buff cycling.

Since you're not tanky, focus on roll dodging with a healing contingency.