Des Por

Sometimes it is really annoying for a party of adventurers to find their way through a labyrinth of a dungeon to find the ladder that leads down to the next lower level. However, this worry is past once they have a spellcaster in their midst with this handy spell. Once known as "Z-Down", it essentially is a weaker version of Xit and allows the party to sink through the dungeon floor to the next lower dungeon level.

The Spell Upward Motion does exactly the opposite and enables a party to quickly move up a dungeon level.