Ok, so this is the backstory you need to know for this:
Azorius Senate discovered Yehanium, a mineral that can be used to make any type of superweapon. But the Azorius, being a "peaceful" and lawful guild, rejected it, and locked it up in a secret dungeon. Of course, it was only supposed to be secret. In reality, spies delivered the news to 3 particular people - Guildmasters of House Dimir, Selenya Conclave and Izzet League. And there was no sharing it either, that's not how the 10 guilds do. The guilds quickly gathered allies and the following armies looked like this:
Shadow Alliance - Dimir, Simic, Golgari
Noble Alliance - Selesnya, Boros, Izzet
Power Alliance - Rakdos, Orzhov, Gruul
That's where you come in: Each week I will present you with a dungeon master, a guard of this level of the dungeon. Each week you will invent cards for one of the alliances (that you keep consistent each time), 3 entries max each week. The winner alliance of each week will get exclusive acces to a mechanic I make up to use in your cards (WARNING: Cards from other alliances that try use this mechanic will be DISQUALIFIED, regardless of how good they are!). I will declare the week before the final when I think you've had enough challenges. At the end of the week before the last, I will ELIMINATE one of the alliances, leaving only 2 to compete in the final week! The winners of that week? They will get at least 50% their entries favorited, and the especially good cardsmiths will get a follow!
I designate this week to asking questions and diving supporting feedback. Monday, 29th of January, the game is ON!
-Your fellow cardsmith