Ive got a couple of those cards in my Valduk, Keeper of the Flame Commander deck, and The Golden Throne will work perfectly in that deck, and not only as a buffer against losing the game
Zanarkand, Ancient Metropolis is definitely the best one for Limited, and the runner up is either Midgar, City of Mako or Lindblum, Industrial Regency
Only exiling your opponents graveyards gives this excellent egg tons of utility in graveyard-centric decks and it cycles if you dont need the graveyard hate
If theyre exiled or killed, theyll return as normal lands
If it enters the battlefield at the same time as a Plains when you control no other Plains, it will enter tapped
I had you reveal the card from your hand out of necessity