Elege, Emrakul's Emissary

+1: Create two 1/1 colorless Eldrazi Scion creature tokens with "Sacrifice this creature: Add one colorless mana to your mana pool."
-3: Search your library for an Eldrazi card, reveal it, and put it into your hand. Then shuffle your library.
-7: You get an emblem with "You may cast colorless spells without paying their mana costs."