Tanazir Quandrix is an enticing Commander because of the word "double" in its oracle text. Not to mention having the ability to make your other creatures mighty large even if they don't have any +1/+1 counters on them. We're either planning on getting in with a giant unblockable creature with a million counters on it or Tanazir's going to do the swinging while buffing the team to massive proportions. Still unblockable, ideally. And to protect the engine, we're running flash hexproof enchantments. Those, along with our ramp enchantments and enchantment creatures afford us a little bit of an enchantress theme as well. Lots of fun stuff happening in this little Simic - or should I say - Quandrix deck!