While the Core Sets of old were never my favourite sets, I did see the reasoning behind them
The copyright information is at the bottom of the card, while the card number is at the top
Re-casting the Ring from your hand lets you keep the protection from everything active, shielding you from targeted combo kills for another full round
While Emrakul, the Aeons Torn still sees fringe play as a sideboard option in various decks to foil Mill strategies (among other things in Indomitable Creativity), Emrakul, the Promised End now sees the most play
As an agent of absolute chaos, it turns any round into a crap shoot, destroying artifacts, lands, or hands in the process