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.
and Culture and Spiders (with hidden nationality) for suppressing your neighbours. (you empty their cities of defenders and let the barbs do the capturing!). 1 or 2 giant spiders is generally enough to weaken or even destroy an early neighbour, they can be captured by scouts if you use lions or wolves to weaken them first. By the time FoL comes along (around year 250-300) you can be sitting pretty on 3 cities surrounded by the uncontested land left by the remnants of 3 or 4 dead civs which can be a wonderful barbarian training ground to get Gilden going and or an Expansionist's Paradise.