mtg card types list Maskwood Nexus - Aetherdrift Commander #132 (English) MTG card types explained -

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

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

You get 36 Play Boosters (504 trading cards total)

It grants all of your permanents Indestructible for a turn, which can essentially counter most board wipes

1 Synchronous Sliver