The wait is over! The 5 Dragon's Maze Intro Packs have been revealed! How exciting! I'm going to look at the decks really quickly to see how they might fare. Lets start with the 3 guilds I play/have played and if I'd buy the decks.
Azorius
Little known fact: I used to love Azorius. This deck seems promising and might pique my interest. The main card is Lavnia of the Tenth. Detaining the living daylights out of your opponent is always great. She's great for a late game play if you want to just finish your challenger quickly, but that only works if you have an army to do it. Luckily, this deck comes with 22 creatures with some great abilities. There is plenty of detain in this deck. There are a total of 5 creatures with flying, so plenty of ways to get damage in. The 12 instants and sorceries that come with this deck are also pretty great. It comes with the fuse card Protect/Serve which allows you to bulk up a creature while making sure your opponent won't kill one of your other creatures. Pair it Lavnia and BOOM death to all who oppose you.
Totally might buy this deck. Better than the Azorius one from RtR.
Orzhov
Ahhhh Orzhov. The greediest of guilds. The main card is the lovely Tesya, Envoy of Ghosts. Protection from creatures? Check. Send all creatures that deal damage to you away? Check. Seems great to me! While you work to get Tesya out, there seems to be about a billion ways to gain life in this deck. Extort, Crypt Incursion, Riot Control. You just might gain more life than your opponents can deal with! This deck is just cruel. The fuse card Profit/Loss is included. It allows you to boost your creatures while diminishing your opponent's. So if you don't extort them to death, you can basically trample over your opponent.
Totally buying this at the prerelease. This deck is so mean I love it.
Simic
I'm nicknaming this deck "Counters For All The People". Granted that's what's Simic is about in general but holy shit guys! Vorel of The Hull Clade basically adds counters to anything you have that may have some. Planeswalker needs some loyality counters? You got it! Need bigger creatures to trample your opponent? You got it! All the counters! Plus Sapphire Drake gives all creatures with counters flying. So basically you can get an army of flying creatures, some with trample to literally flatten out your challengers. Give/Take works wonders too! You can put 3 +1/+1 counters on a creature, then take all the counters of the same one or another creature and draw that many cards. Simic likes cards for some reason. Anyway, get this deck if you like to trample and control your opponents.
Would I buy this? Maybe just for some cards.
Check out the full decklists for these as well as the Radkos and Gruul decks here.
Anyway have fun and enjoy the Dragon's Maze!