This thing stops you losing to practically everything, except for mill, win the game effects from opponents, and the very rare instance of someone stopping damage prevention and hitting you for 21 Commander damage (your life total wont change, but youll still take the 21 marked damage from a Commander)
When most people think of this sort of thing, theyre generally thinking of cards that change another cards color and then utilizing color hosers
Out of the side, Mage-Ring Bully becomes a decent threat when your opponent wont have many creatures to attack or block with
Mickey Mouse Detective provides card advantage and ramp, allowing me to ramp into powerful characters ahead of my opponent
I think these ideas about what these cards mean in terms of narrative can be a useful tool during this spoiler season, though
However, in exchange for these qualities, they also have lower health