By 1999, the Pokmon TCG craze was a global sensation, with binders, booster packs, and playground trading and battling becoming a cultural rite of passage
This brings to mind the way that Shining Pokmon were integrated into the standard numbering of Shining Legends
2 Level 8 monsters
The closest we got before was in a different MTG color, and easier to play, though (we think) less fun: the 6-cost Red sword Embercleave, from 2019's Throne of Eldraine set
Meanwhile The Top 10 Cards To Blink With Thassa, Deep-Dwelling attempted to narrow the deckbuilding window to the best possible synergies for a specific card
The strategy was amazing at fusion summoning in a unique way, as it shuffled the materials for the fusion summon back into the deck from the GY