And honestly, I have faith that they theyll find a way if they havent already
As far as strategy goes I would use this card for two purposes, the first would be to use its Poke-Power Energy Trans so I could load up Pokemon that need a lot of energy cards right away and the second purpose I would have for this card is to use it to poison Pokemon, I would move Sceptile into my active Pokemon spot, poison the active Pokemon and do 40 damage to them, then retreat Sceptile for only one colorless energy card
Pull rate from Regular Packs: 0.32% The estimated pull rate for Mega Gengar ex (Mega Shine) from a Regular Pack is approximately 0.32%, meaning you might need to open around 313 Regular Packs to obtain it
Common blue spells to play are Ponder, Preordain, Brainstorm, and Counterspell, not to mention power cards like Ancestral Recall and Time Walk
They ordered this card from PokeOrder.com (which I am very surprised still exists, though now with a more modern focus) when it was just $25