Its open-endedness allows for a lot of possibilities
The kicker is that if your opponent tries to replay the card, it costs more, slowing down their game plan
Bob's deck relies almost entirely on summoning his Quiz Panel monsters, which lay in face-down defense position until attacked by a monster or activated by one of his other cards
In Yu-Gi-Oh!, you can Normal Summon a level 4 or lower monster in attack position once per turn during your Main Phase if you have not yet Normal Summoned or Normal Set (placing a level 4 or lower monster face-down in defense position) for that turn
There are cards that reflect specific moments, such as Aerith Gainsborough giving her +1/+1 counters to other Legendary Creatures when she dies, or Zodiark requiring all players to sacrifice half their non-God creatures, buffing it in the process, as happened before the events of Final Fantasy 14
Most of the time, you'll cascade into another permanent thanks to the decklist's low non-permanent spell count