Clarification: This deck is no deck you ladder with, this deck is something you switch to if you only (>80%) face control decks. Against Aggro it just don't cut it, but against handlock you can burn so many cards it's not even funny. With that said have fun with the deck.
With the latest addition through Gnomes vs Goblins mill decks could finally be less gimmicky and maybe somewhat competive.
The main goal of a mill deck is to fill your opponents hand with cards he can't use and burn additional cards he draws over the ten card handlimit. Ten cards in hand also means Clockwork Giant costs only 2 mana for a 8/8. 6 or more cards mean Goblin Sapper is a 6/4 for 3 mana.
Malorne for infinite lategame pressure + taunts to get there
The deck is made with no specific meta in mind. We'll wait and see how that shapes and can make adjustments to fit in. If you want to make your own changes the first cards to swap are probably Deathlord and Wrath
More Giants are never bad, so two Mountain Giants is actually a nice Idea
Not sure about Jeeves but probably not worth it. If your opponent is down below 3 cards things are all going against you and you probably lose.
Thanks to a comment from user galuf, Elite Tauren Chieftain is now on the list of possible additions. I didn't even think of it.
If you try this deck and make your opponent burn his legendarys make sure to share your best plays with us in the comments.