Tree of Eternity (Warcraft III)

A Tree of Eternity is a tree of ages who has reached its full maturity. This is the highest level of growth, and the strongest possible bond with the World Tree and the Well of Eternity. At this point the night elf community is at its height, drawing freely from the tree's nearly unlimited power.

These ancients suffered heavy losses during the Third War and returned to the forests to spread their seeds and replenish their numbers undisturbed.