One player ran the numbers and suggested completing the entire expansion without paying anything would take something between approximately 500 and 1100 days of consecutive play on average, depending on what in-game rewards and mechanics you factor into the equation
Players love them, and Wizards loves handing them out as event prizes or participation promos
This is a game-changer, and that makes it Top 5 material
It is about fees, buyer intent, sell-through speed, trust, audience size, and how much work you want to do per sale
Reveal the player you chose: Choose new targets for target spell or ability if it's controlled by the chosen player and if it targets you or a permanent you control
What is more common is that cards like Negate, Spell Pierce, Flusterstorm, Dispel and Glen Elandra Archmage abilities are held up to prevent countermagic and this bypasses such things and will force through your creature