You get a deathtouch chump-blocker to deter your opponents, as well as artifact, enchantment, or land hate when you need it
All cards that aren't on the battlefield, spells, and permanents are colorless
Mill never had the right support to dominate any format, and if the milling failed, the mill deck would be too far behind in the game and lose but in Commander, even with 99-card decks, mill might work with creatures like Bruvac, the Grandiloquent around
It is arguably the most metal piece in the games history
For more Magic: The Gathering goodness, check out our guide to MTG's Commander format, or read our list of all MTG sets in order if you want a peek back in time.
Although this is not the case most of the time, but its usually the most effective way to start