This is my Warden Healer build for PVE. In my trial group I am responsible for providing the Major Slayer buff, therefor I am wearing the Roaring Opportunist Set. It is important that the other healer provides the Major Courage buff and wears the Spell Power Cure.
If you have a Warden Tank in your group and they are using Expansive Frost Cloak so the group members have the Major Resolve Buff already, you can swap the skill out for something else, I like to use Lotus Blossum or a shield, and Aggressive Warhorn with Reviving Barrier depending on the situation.