MAGIC: THE GATHERING
Creatures you control get +1/+1.
Whenever you tap a land for mana, add one mana to your mana pool of any type that land produced.
Mirari's Wake is a key ingredient in Green-White Commander decks. Generate all the mana you need, and make your creatures a bit bigger, too. A great fit for tokens decks, such as Rhys the Redeemed or Ghave, Guru of Spores.