Quote from ElAzar »Exactly, why not thread it like any other format?
Some people call it an eternal format, and in those, Commander, conspiricy and even "special set cards" like portal are legal.
If i am wrong, people should stop calling it an eternal format.
Because like Modern it is not an eternal format where you can use every card regardless of when it was last printed, it is a non rotating format with a set start point. For both you should treat them the same way in that the only cards that are legal are those that have been printed in a mainline set since what ever starting point you have chosen.
And again if WOTC were to get a hold of it they are going to treat like its closest analogues which are Modern and Standard which don't allow FTV/Commander/Planechase cards unless they have been printed in a relevant mainline set, unlike Commander which was designed to be played using the Legacy/Vintage card set from the start.