The only real knocks I could see against this design are the logistical burden of having another emblem-type player effect to track, and the way that the maximum speed of four occasionally limits how card effects can scale with it
If they chose the same creature you chose, claim the prize
Mew EX Copies enemy attacks, adding flexibility
Because of Volcanions ability Flare Starter, if a player goes second on their first turn, they can search their deck for three Fire energies, use them any way they want, and then shuffle their deck
Roxanne, Starfall Savant Getting Meteorite tokens is neat, but lets be honest: Roxanne, Starfall Savant joins the ever-growing pantheon of Treasure commanders
Oh yeah, and it also shuts down the land-destruction ability of Field of Ruin, Ghost Quarter, and Tectonic Edge, which means that along with being played to hate on Tron, it could also be played in Tron as a way to shut off the opponent's ability to destroy Tron pieces