Originally Posted by
TheInfamousBearAssassin
Living Wish isn't comparable to Green Sun's Zenith or Summoner's Pact. It is much wider in scope. Unless you run an overrun lord main, those cards can't actually win you the game, which means you need to get the combo running at full throttle to reliably draw a one of maindeck Emrakul/Banefire/Mirror Entity to win otherwise. Neither can find a Gaea's Cradle. Neither can find any particularly useful answer outside of Zealot.
Living Wish is simply the most powerful tutor, not least because it lets you cut cards maindeck that are often bad to draw anyway. It's terrible on more than your budget to run 3-4 Gaea's Cradle. They're not actual lands early game and multiples are dead, and filling out your deck with more lands makes it harder to go off reliably. Ditto to the various win conditions. 4x Living Wish not only means never drawing a dead Emrakul, it means that without comboing, with mana lords you have a very high chance of randomly killing the opponent sans any Glimpses resolving. You also get a lot of cards that hose glass cannon decks like Dredge, and answers to Plague.
Furthermore, I think the loss in sideboard space is overstated. Elves is such a synergy-dependent deck that it's rare that you would want to side out more than four cards in any instance anyway. You really don't have too much leeway to abandon your main combo plan, nor is it even necessary or desirable to pursue an aggressive strategy. All you need is a few lords, and with 4x GSZ/Pact and 4x Wish, all you really need then is 2x Elvish Champion in the board to have access to 9 copies post-board.