Move a Map Tile
GUARDIAN ACTION: The player may move one of the Map Tiles in a straight line horizontally or vertically, so that it moves into the empty slot on the grid. The Map Tile can move over another Map Tile on its way to the empty slot. This means that in a 3-4 player game there are always four Map Tiles that can be moved and four Map Tiles that can’t be moved. In a 2 player game there are three Map Tiles that can be moved, and two that can't.
The Map Tile cannot be rotated during this action. In other words, after the movement the Map Tile is still in its original rotation.