1 Synchronous Sliver
For example, the last ability will count experience counters that you got from the first ability, from another ability, from proliferating, and so on
Have a think about how your deck interacts with the yard and see if Ground Seal is right for you
It grants all of your permanents Indestructible for a turn, which can essentially counter most board wipes
Zendikar also had a minor milling theme that was cut back a bit in development (although the Hedron Crab is nothing to laugh at.) In the early days there was some doubt as to how much popularity milling has, but every time we've made a push towards an exciting milling card, the audience has been very receptive
Amethyst characters were already the best at drawing you cards, though sapphire certainly competed with that title in set two, but now youll get a heck of a lot more bang for your buck when you flood your hand with new cards