You can walk short distances on vertical surfaces.
Benefit: Each round, you may walk up to 10 ft. on a vertical surface, before landing on the ground again. This 10 ft. may be horizontal or vertical, so long as you do not exceed your base movement for the round. Moving across a vertical surface provokes an attack of opportunity, just as any horizontal surface does.
Undefeatable: The Collected Feats Sourcebook, Copyright 2009 – 2010, Louis Porter Jr. Design, Inc. Undefeated, Copyright 2011, Louis Porter Jr. Design, Inc.