This cards within this deck work astonishly well together and can usually have an opponent on the back-foot by turn 4/5 if it is played correctly. Almost all the cards interact with one another in some way which makes it incredibly fun to play with and can also leave your opponents baffled...!
The backbone of this deck has not been founded upon dropping a blood-curdling 4/4 Ghor-Clan Rampager on turn three. Neither is it structured around casting another, with flash, in an opponents fourth turn; before swinging with both alongside a simultaneously dropped 4/4 Stormbreath Dragon with flying and haste, the fully-evolved 4/4 Experiment One AND a 2/3 Prophet of Kruphix you dropped in your own fourth turn for a potential eighteen on turn five..!! And it is definitely not based upon wiping out the opponents battlefield (if there is anything left) with overloaded Mizzium Mortars within their own fifth turn........
No.
Although all of this may be possible with this modest little deck, the simple answer lies within the design. Ignoring land for the time being, the deck is split into three main sections. These are the LOW DROP (CMC one or two), MID DROP (CMC three or four) and HIGH DROP (CMC five or six). Each of these sections consists of twelve cards, or 20% of the total deck. Being a card game, MTG is ruled by the laws of probability and odds; just like texas hold 'em poker or just about any other card game out there. By organising the deck in this way you are not only helping the deck work properly more consistently but you are also providing yourself with the best possible odds for a perfect draw! In layman's terms, if you draw six non-land cards you are maximising the chance of there being two cards from each section. Obviously there will also be land cards drawn in between, however, the important thing is you are MAXIMISING your odds for a good draw! This is also why we have six Planeswalkers, four of almost every other card and, of course, 24 land cards.
Now, running back to the land...
You may have noticed their are three (yes, THREE) colours of land in this supposedly well-balanced deck. In the basic deck type the green and red mana symbols are almost equal (see Deck Stats), yet you will have a much higher chance of picking up a forest than a mountain in an opening hand.
Why the hell is that you ask?!
Well, if you look at the low drop cards (ie 4x experiment one (f), 4x Sylvan Caryatlid (1,f)... etc.) you will see they REQUIRE green mana. Without this you have no early game and will lose any advantage you would have had. By the time you require red mana, this will usually be on turn three or four, you will most likely have either have dropped a mountain or stomping ground OR you can tap a Sylvan Caryatid to provide it. After you drop Xenagos, the Reveler or the Courser of Kruphix OR even, & this is a personal favourite, the prophet of Kruphix then you will have an abundance of mana therefore most of the you will find that although this is a tri-coloured deck; it is extremely rare for it to run short of mana.
Sideboard:
Another bonus with this deck is that sideboarding is relatively straightforward and mostly consists of swapping like-for-like with regard to CMC's (Converted Mana Costs). For example:
[1] To improve AGRO....
Swap out 4x Stormbreath Dragon (3,m,m) for 4x Coordinated Assault (m)
-OR-
[2] To duplicate spells and baffle your opponents....
Swap out 4x Stormbreath dragon (3,m,m) for 4x Melek, Izzet Paragon (4,m,i)
-AND/OR-
[3] To counter spells....
Swap out 3x Courser of Kruphix (1,f,f) AND 1x Domri Rade (1,m,f) for 4x Cancel (1,i,i)
-AND/OR-
[4] To counter flying....
Swap out 3x Xenagos (2,m,f) for 3x Gruul Charm (m,f)
In each of the examples above the total CMC being swapped out is replaced by an equal CMC coming in. This IS important as the fundamental reason for this deck working so well is largely down to its well balanced Mana Curve, as discussed earlier. In addition, sideboard examples [1] or [2] can be combined with examples [3] and/or [4] in order to completely overhaul the characteristics of the deck whilst maintaining its slick Mana Curve.