The differences between Pokmon cards in English & Japanese 1.1
Using cards like Entomb or even Final Parting makes assembling Eldrazi-Angel-Exodia pretty easy in Commander, and there arent that many ways to stop it, especially given it stops a Cyclonic Rift (because the spells mana value is still two, even when overloaded)
If an artifact on the battlefield has in its mana cost, X is 0 for the purpose of determining its mana value
The plane is defined by its overabundance of nature and richness in mana, so it felt most at home as a green battle
Tom LaPille (who was on both the design and development team) came up with the idea of changing it to thirteen, as the number had become a little theme we had thrown in the design
In contrast, Travis felt like Curiosity was a trap