They offer players the ability to skip those phases and quickly move to the cleanup step
If a creature with devour and another creature are entering under your control at the same time, the creature with devour can't devour that other creature
An amazing creature from Modern Horizons 2, and definitely the best Wizard card for Commander ever printed
(As they enter the field in the ready position.) Each card - both the challenger and the card being challenged - then deal damage to each other, equal to their strength value
Additionally, with access to blue, you can use Brudiclad, Telchor Engineer to turn your Rocks into a hoard of treasure or an army of artifact creatures, or even try to get a Mechanized Production win
You can imagine why, as over a million people across the world have contracted covid-19 and deaths continue to rise, why it would be insensitive to release a Magic card with the words Death Corona on it