If I remember correctly, you can move within your movement range 100%. For each panel beyond your range, you lose 20%. For example, you have a move of 5 & try to Teleport 7 panels away, you will have a 60% chance of success. There may be a minimum % chance of success, even if you attempt to move 5+ panels beyond your range, I'm not sure. Check the BMG, there's not much that's not in there.