Eternals is a special guild which you automatically join when you reach level 111. You do not leave your regular guild which this happens and both your regular guild object and your Eternal object are active together.
Eternal commands are all prefixed with "eternal" or the shortcut "(" (i.e. eternal info or (info).
Eternal guild experience is earned at a rate of 1 per round of combat, plus one for every round the eradication skill activates. Eternal gxp is spent on either raising eternal skills or eternal guild level with the (train command.
Eternal powers are gained and advanced by spending regular mud experience points and you can (learn powers in the Eternal guild hall on the southwest side of Pinnacle.
On the 7th of every month, you may (unlearn up to two eternal powers for a full refund of the experience points spent.