Water/Ground hybrids

Well, I think title is pretty self-explaining, I would very much appreciate to see a few of those guys added in a future release, since there are currently none in existence in the entire game, and I (and many others) really like the rule change those guys bring to the field. If it's not too much asking for, maybe my favourite pokemon Quagsire? And Houndoom, I really like Houndoom and there are no dark/fire hybrids either.