You scribble a glyph on a door and add a mental push so it opens to someplace it shouldn't.

Encounter
Minor Action      Melee 1

Target: One door, gate, or similar object

Effect: The target becomes a magical portal to a square within 20 squares of you. The portal lasts until the end of your next turn. Until the effect ends, the target and the square you chose are considered to be adjacent to each other for movement purposes.

Published in Dragon Magazine 419.