To preface, this is not a deck to SERIOUSLY climb, it's possible to climb but if you want to tryhard I'd recommend a deck like secret mage or reno priest instead. 

Edit: You can climb with this new refined list! Changed out cards and (along with getting the 1k druid wins portrait) did well climbing! The deck destroys Secret Mage, I went 23-2 vs the deck, and although other matchups are harder, none are impossible! I just teched in gluttonous ooze for the rogues that have started popping up and will report how it goes. Y'shaarj was added to the list and it's amazing! Definitely a great copy target for elise and floop, especially if elise can copy more moontouched amulets or you manipulate zephrys to give you a doomhammer.

With that out of the way, I present Highlander N'zoth Druid!

The deck essentially draws through itself with survival tools to get by along the way and aims to copy a win condition of your choice through effects like elise, floop, and zola. 

Win conditions: 

Reno Jackson: copy when facing aggro, especially aggro that will burn out of cards. N'zoth and your death knight will take care of the rest so just focus on stabilizing. Don't worry if you're not able to copy reno, just survive!

N'zoth, god of the deep: Facing heavy control decks you can (in an ideal scenario) fill your board with n'zoth up to 6 times, even more if you can set up a hand to zola or floop an elise copy) your main problem here should be allocating your resources to best set up this ideal hand, keep this in mind as it makes the deck much tougher than you think when the situation arises!

Zephrys: Zephrys has a million different possibilities to use him, an interesting one being getting a doomhammer from him and copying a Moontouched Amulet with elise to deal 20 damage the next turn (26 with death knight hero power). Other than that, you can use zephrys as a burn option, removal option, AOE option, or to just get a tirion. Keep in mind that if you choose a minion that has a tribe it will get resurrected by n'zoth (could be a good or bad thing depending on what the minion is)

The deck has alot more options to explore and I feel like could be viable to seriously climb with refinement. Let me know how you experiment and change the list as the deck is absolutely not final. 

Final tips: The deck is built to be fluid and make it easier to set up good elise copies, hence why I tried not to run situational and expensive cards like poison seeds and spreading plague for example. If you make changes to the list keep this in mind! The reason we play this deck is to copy strong cards for the matchup. 

Tech card options: There are a TON of tech card options in wild which you can use at your own whim. Against Res priest all the time? Run Tinkmaster Overspark or loatheb. Still struggling against secret mage? Tech in an Eater of Secrets. Odd Paladin beating you down? Add spreading Plague. Just keep in mind that it's preferable not to run any 1 or 2 cost minions like dirty rat or else it interferes with Witchwood Piper consistently drawing zephrys. My tech slot is currently occupied by gluttonous ooze since the rogue matchup feels unwinnable otherwise but feel free to replace it with whatever you want!

Thanks for reading and I hope you enjoy the deck!