I guess it depends on the particular strategy you're employing.. for me, I'm using an army composed purely of elven units and would like druids to round out the roster

Also it's in part because having the Archmage talent allows me to recruit druids with less leadership.
Speaking of the mage tower in islands of freedom, what is that scroll for? Till now I still have it in my inventory with no idea what to do with it.
All the various "quests" huts that eventually sell you troops after you have done their quests are selling me anything but druids.. The castle with the elven princess sells Elves (the archers), wolfevine elf and barbarians (O.o) Druid elen sells wolves >.<
The elf beside the capital turned to selling sprites while the one at the harbour sold more archer Elves.