Its not like blocking, where the creature needs to be untapped to block
Enchanted creature attacks each combat if able
If you dont want to rely on milling from the top of your deck, there are great entomb effects like Buried Alive and Gravebreaker Lamia that help you to fetch cards to put in your graveyard
As each of these products is designed to match up best with the different motivations of Magic players, let's look at each of the products features so you can find the Modern Horizons 2 products that are the best fit for your play style
Green/White's rares and mythics that make you want to go the tokens route include: Ant Queen, Overwhelming Stampede, Wolfbriar Elemental, Elesh Norn, Grand Cenobite, and Mirror Entity
In all honesty, I had to stare at Aminatou, the Fateshifter for a while and let the card brew in my brain before I really understood what I was looking at