MysticalWiki

Portal

       Usage: cast 'portal' <target> : cast 97 <target>
      Effect: Opens a portal to the target
        Cost: 200
    Duration: level/20 hours
Casting Time: 12
      Target: A player character or city portal
    
This spell opens a portal that allows any number of characters to move to the
targeted location within the duration.  You can't open a portal to a character
who has summon protection on, nor can you open one to any room that is flagged
as LAWFUL, GODROOM, NO_MAGIC, ARENA, or PRIVATE.  There are city beacons at
SUNDHAVEN, MEADOWDALE, THALOS, LONDONIAN, LOTHIAN and MAZTICA.
   
See Also: RELOCATE

The classes that get the spell portal are:

priest     : Level  70 (excellent)
monk       : Level  90 (excellent)
wizard     : Level  70 (excellent)
druid      : Level  70 (excellent)
illusionist: Level  80 (excellent)
necromancer: Level  70 (excellent)