Explaining “A Minecraft Movie” in a Crowded Elevator

You might be wondering how Golem could be OU-tier in RBY but then fall down a tier to UU and then even further down to NU when it was considered a counter to Tauros, Alakazam, Chansey, etc. All staples of the RBY OU format. Well, we'll have to go back to its usage in the 1997 Nintendo Cup Pokemon tournament and then discuss how shattering the (re)discovering of same-type hax immunity was to the viability of almost every non-Normal-type pokemon.