Mill Mill isnt very common to see at a 4-player table where deck sizes are at least 100 cards, but there are some commander's deck that relies on milling as a win condition
Condition: Brand new, factory sealed, never opened
If they dont have removal its effectively card advantage, and you also get information to plan your next steps
Control then becomes too good, because it has strong tempo AND card advantage
If you have creatures like Goldspan Dragon or care about artifacts (such as branching into UG or RG) then Provisioner is a slam dunk include
Creatures (26) 4 Ash Zealot 4 Rakdos Cackler 4 Legion Loyalist 4 Foundry Street Denizen 2 Rubblebelt Maaka 4 Akroan Crusader 4 Firedrinker Satyr Lands (17) 17 Mountain Spells (17) If you load up your deck with high velocity, low impact cards you cant afford to only draw a few of them