Type: Item Creation
Source: Web
You can create a portal that has a moving origin point.
Prerequisite: Create Portal
Benefit: By creating this type of portal, you affix a portal to the frame rather than to a fixed point in space. A moving portal requires that the origin be anchored to some material frame, such as an arch on a wagon or the limbs of a tree. Beings using the portal must be able to pass through the frame. For example, you could create a portal that exists inside a treant's branches, and the portal would move with the treant. You could not affix a portal to an ogre or gray ooze and have the portal follow the creature around. You cannot create portals that move on their own power or that move by magical means. All movement of the portal is directed by the frame to which the portal is affixed. It is not possible to move a portal's frame through itself. Adding this feature to your portal increases the base cost of the portal by +25%.
Special: Portals created without the feat are fixed in space.