If the DMG is steady always wait for Healing Light to heal your target. It is more mana efficient and you can deal DMG while waiting for its CD.
Always use Swiftmend instead if Light of Revival to quickly heal a single target.
Desperate Prayer is healing for 100% of your HP not the HP of your target.
Only use Divine Plea in Emergency situation if you do not know when the next AoE will hit your group.
Your Battlemode Shield has 30s CD – not showing any CD is just a bug.
As you use the gem “Vigor of Revival” always keep your stacks up to 5 for you Swiftmend to be a AoE Heal if needed.
Your Battlemode AoE Heal has a 10m AoE range from the position or your target not from your position.