These are put into their owner's graveyard, and any Equipment attached to the land become unattached and remain on the battlefield
While Elesh Norn doesnt technically have an enters the battlefield trigger, make no mistake about it, the card does a lot immediately, even if you dont have mana to follow it up with another spell
Now you can go-wide and take down everyone at once
Either of those options can be very effective
That means that your foils from Lorwyn are only getting scarcer and scarcer over timejust like Reserved List cards
Just paying 4 mana to copy the strongest token around (populate, if you will) is very good, and lots of cards and commanders can give you a token every turn, meaning that this class will draw you a bunch of cards even on your opponents turns