To get a lapras simply on a wednesday go in to the cave in Alazea Town climb up a ladder (not sure which one) and surf across a lake then cimb down a ladder. try and get to the deep part of the cave. If you are on the right track you should come bump into lots of trainers (cool trainers). At the end you should see a lake surf across it and there sould(if you have done it right) see a lapras. Challenge it, it should be level twenty, then all you have to do is capture it( I recomend ultra balls to capture it).Then you have a lapras.