With so many different Skills, Traits and Orders it can be a bit hard to know what to play, but I have put together a healing build that should get you some wins with the Order of the Celestial. The Order of the Celestial gives you some great bonuses to healing and is a must for a healing build. At 3 all your units get a small shield at the start of the game and then at 5 all your healing effects are 20% more effective. At 6 when a unit dies it will heal nearby allies for 12% of max health, you also gain over heal in the form of a shield.
Traits and Skills are also important as they give you much needed bonuses to help you heal more effectively.
Traits to look for for your healing Build are: Fanatic Fervor, Empathic Link, Symbiotic Fungi, Regeneration, Vampiric and Mender.
Skills to look out for are: Vital Surge, Healing Touch, Chain Heal and Rapid Recovery.
Personally I believe Healing Touch and Rapid Recovery are must haves for your healing build and at least one of your units should have one of these for a successful healing build.
Ok you have chosen your units now and they have all the healing benefits you could get but what Advisor do you chose? Selene the Luminary has a healing Buff so she makes for a good commander for your units.
Does a healing build really work though? I mean we can put all this together but will it not just delay the inevitable as your forces crumble under the weight of your opponents attacks?
Don't worry I have already been using healing builds to make sure that they work before writing this post. Here is a game that I played:
https://golemoverlord.com/?replay=5576b0906e3e53fe33bd3422207c6221
As you can see I used Empathic Link, Healing Touch(Heal), Chain Heal, Fanatic Fervor and Rapid Recovery(First Aid). I did extremely well and won the battle.
Thanks for Reading, I hope that this helps you with your battles.
Have a great day!