Alter Aeon Online Help

Keywords are:  'spellup'

Syntax:
credit buy spellup <cost>

You can use this command to buy a high-level spellup for your character.
The spells are similar to those cast by both 'summon demon protection'
and 'summon demon detection', including but not limited sanctuary,
armor, various detect spells, fly, and others.  In total, around 20
spells are cast.

Like any other spell cast on your character, these spells only last
until they run out - some spells like sanctuary only last a short time,
while others can last a very long time.  You also lose the spells if
you die, so be careful!