Ok, so I know that in EDH the commander sits in its own little command zone and can be cast from there for an increasing cost based on how often you cast it. My question is, While it is in the Command Zone, do its abilities still function? I seem to remember hearing that they did somewhere, but I'm not sure. I mean, I would assume the things that activate when they attack don't work, but what about things that require paying mana (like, pay x mana to regenerate target creature) or a continuous ability (like, creatures you control have vigilance)?