

Some games also use the rarity system to funnel mechanically simpler cards into more common rarities, which works well in a draft environment, since those are often the cards you want to have come up more. Which is really the point of the system, ideally it would be a system to support draft environments that work well, without artificial scarcity that hurts constructed players.
But you can also make a constructed format that only allows “simpler” cards that have been printed at common, which is neat. Or one that only allows higher rarities.
There are like 3 different routes that make sense for me to get home from work, depending on where there’s traffic