Catacomb Sifter [Battle for Zendikar]

Set: Battle for Zendikar Type: Creature — Eldrazi Drone Rarity: Uncommon Cost: {1}{B}{G} Devoid (This card has no color.)When Catacomb Sifter enters the battlefield, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add {C}."Whenever another creature you control dies, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)