Elemental Mage Rank 5 Deck List Guide (The Witchwood)

Introduction to my Elemental Mage Deck

After playing ranked play (usually rank 12 to 10) for sometime with my Baku the Mooneater Paladin and Shudderwock Shaman, I actually got bored with the Meta. Playing with only two classes is quite dull, especially when I felt, that Shudderwock Shaman was sometimes unreliable. I kept on meeting Paladins, Druids and Warlocks (which I still do), but I had no variation in my matchups - and that was boring. So I decided to try something different from the current meta to have fun and challenging myself. I didn't want to use huge amount of dust, and since I had Frost Lich Jaina from the Solo Adventure and opened Aluneth in a pack, I wanted to try out Mage. And with many strong elementals, particularly for Mage, I wanted to give it a try.
It turned out pretty well, and I have now reached rank 5 (not the best, but a record for me). So if you have some of these cards, I would recommend you to try it.

Elemental Mage Mulligan Guide

HIGH PRIORITY KEEPS

Fire Fly - The best opener in the deck, especially if you're starting, and a 1-mana 1/2 Elemental extra in hand.

Glacial Shard - Very good if you aren't starting, and you freeze your opponent's 1-mana drop. Can be used to start with though.

Acidic Swamp Ooze - Keep, if you meet Mage, Warlock or Warrior. Destroying Aluneth ASAP is important, and destroying Skull of the Man'ari after Warlock plays it is savage as f***.
Keeping it with Hunter, Rogue, Paladin etc. is great anyways. It is optional to wait, if they play a weapon. Else, play it as a usual minion on T2.

Plated Beetle - Solid T2 minion with an extra 3 shield is nice to have.

Pyros - Must play on T2. With the extra elementals in your hand (Pyros 6/6 on T6 into Blazecaller on T7...) and 10-mana 10/10 can be used later on.

Lower Priority (Keep only under these conditions)

Tar Creeper - Keep, if you have something else to drop on T1 or T2 else swap it. Must keep against aggro (e.g. Face Hunter or Rogue).

Voodoo Doll - Keep, if you meet Warlock and have something to play on either T1 or T2. Should be used against a big threat removal (e.g. an early mountain giant)

Playstyle and Strategy

vs. Aggro

vs. Control