Mom! Her shiny from Christmas was a Luvdisc. You have her contact info already, right? She doesn't have access to another pokemon in that egg group, but connect her up with, oh, Eridan or Cheria? And that'd probably work out, since they've got a bunch of water types.

Or if you know anyone with a Gyrados or Magikarp! Water 2 is such a weirdly small group, I don't get it.

...Sollux has one, but that's part of his passive-aggressive magikarp thing with Eridan.