You can wreathe yourself in divine protection. As a Bonus Action, you can gain the benefits below for 1 minute or until you choose to end them (no action required). Once you use this feature, you can't use it again until you finish a Short or Long Rest.
Radiant Regeneration
At the start of each of your turns, you regain Hit Points equal to half your Warden level plus your Constitution modifier.
Spirit Guardians
As a part of the Bonus Action you take to use this feature, you cast Spirit Guardians without a spell slot. When you cast it in this way, its duration is 1 minute and doesn't require Concentration.