I always find it immensely useful to figure out some quick ways to improve the deck in question
Its main attack, and it should be noted that VMAX Pokemon can use their main attacks as many times per match as needed, is called G-Max Wildfire
Plus, Stage 2 Pokemon that are useful, like Vikavolt, Metagross GX, Gardevoir GX, and Decidueye GX, all either accelerate Energy attachment, or, they are only used from the Bench, so having 4 Energy cards at once isn't that important
It's wise to tuck a few of your own fallen creatures beneath this to dissuade your opponents from killing it too swiftly
This can often win you the game on its own, and the fact you can convoke this means casting it will be extra easy
And sixth, and seventh, and eight, etc