Whenever an opponent casts a spell, reveal the top card of your library. If it's a creature card, put it onto the battlefield. Otherwise, you may put that card on the bottom of your library.
As an additional cost to cast this spell, sacrifice a creature. You draw cards equal to the sacrificed creature's power, then you gain life equal to its toughness.
It wasn't long until the elves had developed a use for every part of the Eldrazi.
You may play an additional land on each of your turns. Play with the top card of your library revealed. You may play lands from the top of your library.
Whenever you cast a creature spell, create a 3/3 green Beast creature token. Whenever you cast a noncreature spell, put three +1/+1 counters on target creature you control. Landfall — Whenever a land you control enters, you gain 3 life.