Dwarf vs. Wingayel (Lands of Outcasts)

The root of the defeat lies in the incorrect choice of upgrades for the final battle! 1) Dryads instead of nymphs - the latter have 1 more damage, which, with such armies, is more significant than the ability to cast "Dispel" or "Swarm"; 2) Dancers - why not Wind Spirits?; 3) Druids - why not Energizers, since the High Druids don't cast spells anyway?; 4) Unicorns - why not Children of Light, especially since Wing had skilled Light magic? And couldn't Wing acquire "Teleport" and "Vengeance" in 3 months? ;)