http://mewn.psupedia.info/Pokemon/BTMovesets.htm

First off, I did not make this website; I just found it.
The link goes to a table that has a list of all the Battle Tower Pokémon and their movesets, which could be very useful. I have found some funny sets here, such as a Chansey with Focus Punch, a Special Sweeping Bastiodon, and many combos with Iron Ball/Macho Brace with Trick Room.