katika
Warlord
That's assuming you can get both Archmages and Druids, or both/all Inquisitors/High Priests and Druids. I was refuting the statement that Druids are better terraformers because Archmages take too long to get (XP). I haven't looked at the tech costs, so Druids still could come out sooner that way, but an elven leader should have no problem getting vitalizing Archmages shortly after the necessary tech.
Still, I think that the elves should probably go for Inquisitors/High Priests (and Paladins if they're good) first. That gives them two/three T4 units with the fewest techs, especially considering they'll want bloom sooner rather than later, and this will also open up more levels of the Altar so you can build your Druids with Nature III in a single turn. Once Inquisitors and High Priests are done terraforming, they have more utility than Druids unless you build many extra nature nodes, which probably is a viable strategy.
Still, I think that the elves should probably go for Inquisitors/High Priests (and Paladins if they're good) first. That gives them two/three T4 units with the fewest techs, especially considering they'll want bloom sooner rather than later, and this will also open up more levels of the Altar so you can build your Druids with Nature III in a single turn. Once Inquisitors and High Priests are done terraforming, they have more utility than Druids unless you build many extra nature nodes, which probably is a viable strategy.