"This deck plays itself. You just have to do the mulligan part of it and then play the best cards possible." 

Wow ... ok . HAHhhahaha

This deck is rubbish.  Why didn't you copy the analysis into here rather than linking to it?  It looks like you're just trying to get views on your site no matter how.  To quote you: "I ran this deck 6-7 times and lost once. I barely even paid attention (was watching TV) because this deck is so easy to use."

Why don't you test it out properly first.  Rubbish.

What do you think about dropping the dancing swords for either sorcerer's apprentices, azure drakes, or one of each? I'm trying one of each right now. Also considering water elementals, and might drop cairne because he always feels too slow for me. I also did as innocence said and dropped a blizzard for a sheep which i think is absolutely an improvement

Sorcerer apprentice is wayy too flimsy and offers little value. She usually gets taken out immediately. I really don't like her. Azure drake is a bit expensive at 5 mana and it doesn't feed your undertaker. It is 4/4 just like dancing swords. I wouldn't do it. The sheep exchange may work but who would you exchange for water elemental? I wouldn't recommend changing dancing swords for water elemental. There's really nothing to change it out with. The deck is synergetic and most all cards would break synergy except for the AOE spells and those are needed for board control.

If you want to put a sheep in there, drop 1 of your Blizzards.

I dont get when x2 blizzard and x2 pyro- These cards would make sense in a stall deck and having 4 board clears seems too clunky . Cosidering that u can thalanos + Arcane explosion is like a near pyro. Maybe remove 1 of each and add x1 arcane intellect (need draw and buff the wyrm ) and x1 loatheb.

Really, really good deck. I am on my 6th win streak now. I do replace both Dancing Sword with Pyroblast and Loatheb because I think having 11 deathrattle minions is enough. Also, in many cases, either my opp silence my Undertaker or kill him before I summon Dancing Sword with me still having Undertaker on my board.

Mage is my favourite class and I am just too stubborn to play other class. I keep trying different builds with secret (and deathrattle) Mage, but can't really make it consistent enough to beat different types of decks such as Hunter, Zoo, and Priest. I think this is how aggro/midrange should look like, just focus on either deathrattle or secrets. After I test your deck, I just realize that the secret(s) are the one that slowing the deck down due to their 3-mana nature.

Cool! keep it up!

Best replacements for Bloodmage Thalnos?

Go ahead and put an ancient mage in there.

Explain dancing swords please ?

probably seen as a good tempo minion on t3 by the deck creator.

not to mention the obvious, but it also has deathrattle to buff undertaker

A 4/4 minion is worth it for 3 mana and a card for your opponent. And yes, it buffs your death rattle card.

Fun deck, but suffers from a pretty severe lack of card draw. 

True but there are enough big cards to keep you busy each turn.

I would go with Ysera or maybe even 1 Pyroblast but try your best to craft antonidas.