Discussion about Sylvan (Wood Elves).

Even so, Elder Druids are good, especially if you focus on developing the Chaos magic skill for your hero. Then you should also take Machines, so that the enchanted ballista has 3 shots, and Sharp Mind on Logistics, so that the hero has time to enchant it.

If you're playing against a mage with machines, the mage can upgrade the "Control Machines" skill, or take an alternative upgrade for the archers, so that they destroy the machines (if the player is developing the mage's spell mastery, then Control Machines is exactly what's needed)!