The programmer could run at end of month a programm which filters the most played card of the top 50 decks (without lands) and double the cost for 3 months.
Would create an always changing environment.
That'd be fine if people in the top 50 couldn't submit any deck any time.
In theory, they could submit a deck of pillars, photons, and sparks.
Yeah but he's talking about PLAYED cards. I doubt those top-50 guys would grind Gods for 12 hours with Photons and Sparks.
But doubling the cost is a really bad idea. It would be the same if you just removed those cards because nobody would use them.
However increasing the cost of most frequently used cards for about 15-20% would be a much better idea. This would force players to come up with something new and change metagame.
This would go on until all the cards in the game would be in roughly same use. And that's balance.