(Once again, there are no pre-constructed Commander decks for Avatar , but can we interest you in a Commander Bundle?) That includes Magic's take on classics like Uncle Iroh (a multi-colored legendary creature) and Fire Nation Attacks (a red sorcery), along with new inventions like the Badgermole Cub
Chapter II is where you get paid off for milling cards because you can return all lands in your graveyard to the battlefield tapped
When the threat is just ending the world you can get detached from it and see it as another adventure
Things are even worse if you do this with commons
In the event that you are pressed for life, even in a Commander game, Sylvan Library still lets you draw two cards and put two back, at the very least improving the quality of cards in your hand for a turn or two
Nature's Lore is also great because the land you find doesnt enter tapped, so it basically only costs one mana unless youre fetching a tap land