Time your Charizard-EX single purchases around major TCG news cycles
Let's say you cast a Glorious End during your opponent's last turn, if you can untap, play a Gideon of the Trials and make an emblem, you won't lose the game to Glorious End, which means you just Time Walked your opponent for three mana in Standard
Play Malenia as early as turn 3 and start swinging discarding the strongest knight from your hand with her eminence ability and then bringing it straight back to the battlefield
However, after a while, gamers will begin making more and more money by selling individual cards
This does not necessarily make those decks bad, as their power level can overcome this flaw if the combo it provides is simple enough to win games when it opens optimally
Of all the Neo era sets, Neo Destiny is the most likely to shoot up in price