Is it worth it to teach Mud-Slap to a Pokemon? Why or why not?
No. It's power is only 20 but, of course, effect rate is 100%, which makes it better. Smokescreen or Sand-Attack is better for catching legendaries, so I don't think it's worth it.
No it has low power a good gorund type move is earthquake perfect
100 or if you do not have it dig is also good.