Remorting:
Once you reach level 30 (and find the remorter) you can remort, becoming 
A level 1 again, and you will be a member of a remort class. Remorts 
gain special bonuses, including some or all of: higher 
hit-points/mana/moves, no thirst, no hunger, higher statistics, and 
improved skills.  Remorts keep all of their equipment, gold, and 
statistics.  

This is the progression chart for first time remorts:

Original Class              Remort Class
  Warrior       ------->  Paladin or Ranger
  Cleric        ------->       Avatar
  Thief         ------->      Assassin
  Mage          ------->       Magus
  Psionic       ------->       Mystic

There is no remort class for ninjas.  Players who choose to remort a 
second or third time will gain no new remort class, but they will 
reap the benefits of further increased abilities and other special 
bonuses. Remorting will raise two of your statistics in the following
order: Constitution, Strength, Wisdom, Intelligence, Dexterity, 
Charisma. When you have "perfect" statistics, you will no longer
need food or drink.

Immortality:
In most cases, immortality will not be offered until you have remorted at
least once.  Should immortality be offered to you, the details and
conditions of godhood will be explained at that time. If you wish to 
immort, let a god know. Only a certain number of positions are available.

See also: [GODS](/help/info/god-gods/), [WIZLIST](/help/commands/wizlist-immlist/), [IMMLIST](/help/commands/wizlist-immlist/)