DnDChick said:Briefly, without posting the entire power description here:
"You can shift yourself 'out of phase' with the material world, becoming incorporeal. You are unaffected by the material world, able to pass through solid objects and creatures and move in any direction, including up or down, at your normal movement speed."
The rest of the power is just rules-related stuff about what can affect you, etc., but the point is that you become incorporeal for 1 round per adept (i.e. magic-user) level.