Sorry if this is kind of late but the way I got it set up might help you.

I keep it real simple is all,just three conditionals.

1Golem rage bare is full (Rage Healing Mist personally)
2Owner has not triggered golem (Healing Injection/Healing Mist depending)
3Owner has triggered golem (Invigorating Mist)

Should cover you for most situations and isn't super fiddly.You can keep the trigger golem ability on a sidebar you don't use even if you wanted to.
If you want to get cute with it from there just shove in stuff like "Owner is in combat" conditionals between 1-2 but if you want to keep it cheap there you go.