I have seen it described as mimicking a museum plaque, which gives a legitimacy and importance to whatever is inside
As long as you control it when an opponent draws their second card in a turn, that ability will trigger
It involves copying your creatures and using energy counters to let them stick around (or, in some cases, letting them die to take advantage of death triggers)
It's simple: all of your creatures and lands are separate, but you each share the same 30-point life total and take your turns simultaneouslyplus you can block for each other too
It is, however, a decent upgrade to the Final Fantasy VII Limit Break Commander deck, and is rather flavorful thanks to the scene it depicts
Something like having a 5 mana scry for 2 on a land would rarely be activated and thus rarely worth it over the basic land unless it had no drawback at which point it would see play everywhere with no reason not to