Lugia worked well as a Shadow Blaster to weaken, then I used my Swalot to Sludge Bomb them into oblivion. Seriously, a strong poison type (mainly a Swalot or Muk) work wonders against those guys. Their poison attacks can wipe out the Ludicolos easy, and they aren't weak against any of their attacks. When Lugia fainted, I brought out Salamence, which cleaned up the Ludicolos with half their HP left. Salamence, if it's a high level, can take a couple of hits from Ice Beam. Then, when Dragonite came out, I used Swalot's Sing to put it to sleep and whittled it down with my Salamence's Aerial Ace. That's what I did. Just some ideas and a strategy. Or, if you're lazy, trade in a high level pokemon from a GameBoy game and wipe out his team.