With the Welder and a Volcanion to cheat out Fire Energy, Fiery Flint and Fire Crystal to ensure you have Fire Energy in your hand at all times, Heatran GX as an alternate win condition, and Heat Factory for draw, there is little that isn't available to the player in a Reshiram and Charizard GX build
Second, the player who goes first may not play a Supporter until their next turn
Its average $45 price tag right now could be the byproduct of several things
Take a look at the front half featuring Mila, Crafty Companion
Destroy / Indestructible If a card tells you to destroy another card, it simply means to send it to the graveyard from the battlefield
Creatures with escape like Woe Strider can play an integral part in an aristocrats deck, since they can keep coming back from the graveyard after you sacrifice them