In the daily skirmish, I was able to obtain Boost Treefolk 3 by transforming and reverting several times. After reverting the first time, the Treecaller had Boost 2 in elf form. When I transformed the next time, she had Boost 3 (complete with Speed bonus). After further transformations and reversions it started behaving properly again (Boost 1 in elf form and Boost 2 in tree form). Since this is probably a bug I figured I'd go ahead and tattle on my precious Treecaller.