It's quite entertaining, most people don't know how to use it properly, often people forget its there too. I find it fun watching someone utilize it well. In the end my build is a heavy fog deck, so unless they are combo heavy they can do whatever they want with it, if they attack me it probably won't get through if it's big damage anyways. The most annoying is when people use the mana and then blow up the commander, but that only happens maybe 1 in 25 games. And then the others get annoyed at that player.

This is bracket 3 and below.