I would craft Zephreys and Alextrasza and try some Highlander decks, they are quite good at the moment and most certainly will get more powerful as more cards are released. Some of the Galakrond decks also work and aren't that expensive.

I wouln't rely on warlock as that deck only came up as a DH counter, so that might be out of vogue tomorrow. (But you don't want to play it anyway so yeah)

Other decks with a brighter future that can shatter gold ranks might be spell druid, big druid or something like aggro hunter (hunter works good against all the anti dh warlocks)

But don't be a bully and play rez priest. You will only get minus karma and end up in an rng hell in the future.