Champion is more rounded to begin with but evolves into a card that performs additional roles - that being card advantage
EarthquakeEarthquake (40,189 Inclusions, 2% of 2,337,008 Decks) The original red boardwipe, EarthquakeEarthquake still holds up these days precisely because of commanders like Niv-Mizzet, VisionaryNiv-Mizzet, Visionary that want to be able to damage players
In short, these are fun, easy to grasp, ready-made decks that will keep you questing for Lore
More importantly, it reads: If an opponent would mill one or more cards, they mill twice that many cards instead. This thing makes milling out opponents so easy its almost laughable
The Avatar: The Last Airbender deal is great, but it's not the only one available right now
At the very least, at every opponent's draw step, they draw a card