If a creature has protection from a particular [quality] like white or dragons, you cannot use that something to block the creature
You could easily wind up with a bunch of your own lands stuck tapped if you're not careful
look at me im rd Look at Me, I'm the DCI was one of the most popular cards in Unglued , so it seemed ripe for imitation
Fun fact: Some planeswalkers (e.g., Grist, the Hunger Tide) can be your commander if the card explicitly says so
Method two was to use it to make good use of excess land and to finish off particularly problematic creatures, combined with a little extra reach
Every card from Bulbasaur to Mewtwo, plus all Trainers and Energies, is present