This means that there wont be any copies of Ancestral Recall printed ever, and nothing that is printed can be a stronger version of what this card does
Since we're in the midst of prerelease season for Guilds of Ravnica, I've been doing the same things that you probably are: inhaling preview cards on the Intarwebs, reading through set descriptions and reviews, and trying to figure out which guild you're going to play or which card you really want to open (note: it's Assassin's Trophy...that card is gas, kids)
Then there's the 20, mana ability on this card that allows you to cast all Eldrazi cards you own outside the game without paying their mana costs
In this way the Lorcana doesnt change so much as it shifts to use a Lorcana term
Somehow Phyrexian Tower managed to dodge the many, many waves of leaks that hit during the run-up to MH3 previews, meaning its debut last Friday was just as impactful as Wizards intended