Tanks everyone for your suggestions so far! Keep them coming! I will be taking another look at this article and your suggestions later this week 
Explore and Soul Farming
This version needs a Legendary (FG) but it’s fast and leaves an open spot for either « troop of the week » bonus or hero for class XP:
Forest Guardian
Firebird
Spirit Fox
Open Spot
First turn cast Fox (and kill someone)
Cascade should fill the bird or guardian for second action kill.
For kicks, put Bloodhammer in the open spot for first turn wins. (Or hero class that can start with a Doomstorm)
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