By going from 40 mana sources to 43, we increased the the chance of hitting our critical mana from 72 percent to 97 percent and made our fictional aggro deck more consistent
2 (and, by extension, in Neo Genesis in the TCG) with Pichu, Igglybuff, Cleffa, Togepi, Tyrogue, Magby, Smoochum and Elekid marking the first-ever pre-evolutions of existing Pokemon (save for Togepi, which debuted in this generation)
A couple more sets are slated to arrive before the end of 2024, namely Stellar Crown and Surging Sparks in September and November, respectively
Remember that your Ring-bearer cannot be blocked by creatures with bigger power
But also old news, everyone knows this