253/198 pokemon card Pokémon TCG Miraidon ex Weakness / Resistance / Retreat Cost Miraidon EX 253/198 GOLD SR

Toxtricitys Sinister Surge can accelerate Energy to Mega Gengar ex, ensuring it can use Void Gale with ease

Klefki can be obtained from Mega Rising: Mega Gyarados pack in the Mega Rising set

Part of the reason why I can recommend Legacy at all to people who dont have infinite money is that you can generally sell your deck for more or less what you put into it and sometimes quite a bit more

Unfortunately the core of the deck is very important, so theres not much room to customize the list other than tweaking the numbers on cards like Thought Erasure and Murderous Rider

The same is true for the colors of the spell, the colors of a split card are both colors everywhere EXCEPT on the stack when being cast, where only the cast part(s) colors are used