Once a player runs out of burn spells, they may struggle to deal damage and win the game
An ideal gameplan would consist of first playing a bunch of cheap goblins early on in the game
I think it would be important to concentrate in the early game to the Erayo/High Noon combo and then use Karn to bring out Mycosynth Lattice(expensive, money wise, but the only way to end the Karn/ML combo is if someone uses Inspiring Statuary to cast Introduction to Annihilation or Scour from Existence) to target Karn
In either scenario, timing is everything when it comes to playing this card since your opponents will usually get to take full advantage of its mana doubling before you do
Context first: negative expected value is standard for Pokemon card boxes, just as a concert ticket does not return its face value in tangible goods
If you want to explore the set properly, this is the way to do it