Simple, its my favourite Pokemon
But, with the literally infinite possibilities of card altering, a lot of options will fall outside those categories
If your Commander doesnt draw you cards, reduce your mana outlet, and make you a sandwich, then you should really consider how to make sure your deck can run consistently without guaranteed access to smoothing in the Command Zone
Ultimate Green Goblin makes you discard every upkeep, but it gives you a Treasure to compensate for the lost resource
6 Ring of Destruction Ring of Destruction was another card that, like Crush Card Virus, needed to be re-written to balance it
Now you may be thinking "Surely this popular, seemingly innocent children's game doesn't discuss the practice of back-alley cults and Devil-worshipers?" This is unfortunately the case