I'm collecting every Pokémon with every possible ability for my elaborate living Dex! I do have a replacement Lugia for you. I might even use yours for competitive purposes, as I'm never going to get a good one anyway :POh I actually have one of these! Though I have to emphasise that (true to what you're asking) it's definitely not competitive. Bashful Lv.10 DW Multiscale Lugia, from the radar thingy. I don't need or want it, though I'd appreciate any replacement Lugia (for dex purposes) if you're interested.
Although I do wonder why you'd want a competitive ability on a non-competitive Pokemon!