I noticed an error. Should I report it here, @MrSammy ? Will do anyway.
The traitstones requirement for Treant are wrong. It says for the second trait 20 x Minor Water, but I believe it should be 20 x Minor Nature. At least that's what my troops screen wants for unlocking the second trait.
Can't check of course if the other two are correct, and whether all the other troops are right.