Carpet of Shadow

Apprentice, Dark Terrain
Level/School: 1st/Conjuration (Creation)
Range: Close (25 ft. + 5 ft./2 levels)
Area: 10-ft. square
Duration: 1 minute/level
Saving Throw: None
Spell Resistance: No

The ground becomes rough and hazardous, the real floor superimposed with irregular terrain of the Plane of Shadow.

You cloak the ground with an uneven and hard to traverse surface. All movement speed is halved.