The problem with Ancient Tomb is that it is kind of boring
But when you see that getting 4 Energies is sort of a long draw, or, more importantly, you can quickly set up a quick offensive play using one or two Flame Patch cards, then Mega Charizard X EX can turn into a phenomenal sweeper
Gamble incurs some risk (duh), which can be mitigated by playing a deck where you dont mind if your cards end up in your graveyard
To make sure games are enjoyable for all, one should avoid monopolizing time, mass land destruction, and disruptive wheel effects in MTG Commander
As such, even if mass land destruction is normally hated or at least disliked by most players, Planetary Annihilation fills this niche in a way that is not really too problematic for everyone at the table
As a result, this is the ideal location for trading, buying, and selling Pokemon cards