Hey!

So this is my mardu deck for standard. The following will be my views on how to use this deck and calculations on how and why to play it.

Analysis of which cards in the DECK:
One Mana: This deck has three different "one drops", one for each color. This ensures a good and steady early game.
Two-Three Mana: Then it has instants like Lightning Strike and Crackling doom at two and three mana. Suspension Field for those big creaturs. Deflecting Palm for the incoming damage.  And of course the Goblin Rabblemasters at three. And Hordeling Outburst for 3x1/1 goblins on the field.
Four mana: The Buthcer of the Horde four drop is an immense creature with flying, and perfect suited for a "sacrifice a goblin, get haste/lifelink/vigilance"
Five mana: The Ankle Shanker, the death to all card, the retarded looking goblin card, all your 1/1 goblins with Deathtouch and First Strike. DAMN!
X mana: I've put in two Crater's Claws for a burst to the players face when the player is low enough.

How to play it:
Draw turn: This deck is perfect for  when you draw 2-4 mana with atleast one mountain and one of the "one droppers". If you start with 1 mana I would mulligan, if you start with five mana I would mulligan. 5 cards in minimum for this deck, so do NOT mulligan to less than this. This deck doesn't care if it starts or the opponent starts.
First Turn: Lay down the mana so you can one drop a creature (then proceed to look your opponent in the eye and smile, to induce fear)
Second Turn: If you don't have any more one drops conserve your mana for Lightning Strike or just sit and stare at your opponent as you deal damage to his face/creature.
Third Turn: This is your Goblin Rabblemaster turn, put it down and hit him with the 1/1 goblin! If you didn't get the RabbleGOD conserve mana for Lightning Strike/Crackling Doom. OR play another One drop.
Fourth Turn: Butcher Time, sacrifice your onedrop/1/1goblin and gain haste and hit him right in the face! If you didn't get a Butcher, it's time for another one drop or another RabbleGOD or a conserve for Crackling Doom/Lightning Strike or perhaps and Arc Lightning..
Fifth Turn: Ankle Shanker is down, run with all you got, stare at your opponent, laugh all you can and scream: BLOCK ME, I DARE YOU! and then give him a handshake and shuffle your deck and repeat.

If you got duo-triple lands down, the turns gain +1.

To be continued...