The support cast is not filler
The reason is that this strategy tends to just grind the game to a halt, and it doesnt really win
According to MTGGoldfish rankings, Ocelot Pride Midrange currently makes up about 7.5% of the entire Legacy meta, making it the format's second most popular archetype after the infamous Dimir Tempo
LLC - Targeted Bolt Discard 2 Lightning Energy from this Pokmon
GB Dragonite, Lugia, and Great Rockets Mewtwo come to mind for the purpose of actually promoting the TCG
In the Zoroark-GX / Lycanroc-GX mirror match, on his first turn going second, he elected to set up three Rockruff and two Zorua, then attached a Fighting Energy to his Rockruff