The idea here is to play Sakashima, then make a bunch of copies of your other general:
• General #1 is Sakashima.
• General #2 is chosen at the beginning of the game from the choices given. I haven't played this deck yet, but I imagine I'd pick randomly. These are the partner generals that seem to be pretty good if you were to have a lot of them out. Obviously some are better than others. (I'm particularly interested in seeing how crazy Reyhan or Vial Smasher would be.)
• The deck is mono-blue, so it'll be legal regardless of your choice of General #2. It has a ton of Clone effects, which you use to make copies of General #2.
• There are lots of "mana of any color" sources in the deck. Even though I don't actually know what the final color combination of the deck will be, it should be OK on colored mana.
Click here for a text version of this decklist
Click here for my EDH Commander decks