In fact, very popular casual / Commander cards are often relatively unaffected by a Commander reprinting, while more spiky-centric cards lose a ton of value
By paying close attention to the stack, perhaps by Swords to Plowshares-ing the creature you know your opponent planned to sacrifice, you can force them to sacrifice a more important permanent whenever they attack you
It starts by putting a +1/+1 counter on each creature you control, and two on the next turn, and multiplies from there
"I wanted to invoke the rite of birthday trivia"
For example, after the release of Pokmon 151, cards like Gengar and Pikachu with Master Ball foil saw rapid increases in demand, instantly becoming some of the most valuable Pokmon cards in modern sets