I also did a test using Tabletop for the fight with Kagha, Rath, Olodan and so forth. Kagha was persuaded by the heroes to fight against Olodan. Olodan was using Level 9 stats. Kagha was at 8 and Rath at 7. I then put an entire party of 9 heroes against Olodan with Kagha and Rath plus 3 extra druids. Then I had Olodan and 2 of her shadow druids plus 11 other druids who joined their side, effectively pitting 14 versus 14. MAN! That was an awesome fight. Rath used Conjure Animals. Kagha and Olodan used Wall of Fire, druids were using Thunderwave all over the place on both sides. (The PCs at the time were only Level 4.) It was an epic fight, and the heroes defeated Olodan and the others in the end. It worked out very well.