Its not too hard to create a stash of Food, especially in Commander where you have a lot of time to do so
(2017-03-14) If you somehow manage to cast Explore when it's not your turn, you'll draw a card when it resolves, but you won't be able to play a land that turn
Cultivate and Skyshroud Claim are more expensive options that provide additional value, all of which are found in abundance in Commander
Sylvan Library (green, 2 mana): Three cards per turn, with a life-payment trade-off
As well as the usual win state for MTG, you can eliminate a player by dealing 21 damage to them with your Commander
You can pay one black mana and sacrifice another creature to have a player mill three cards, which is cool, but you can also pay one life to add one colorless mana which can only be used to cast spells from your graveyard