Arrival of the Titans

Devoid (This card has no color.)
When Arrival of the Titans enters the battlefield, search your library for a legendary Eldrazi creature card, put it into your hand, then shuffle your library.
At the beggining of your upkeep, put two 1/1 colourless Eldrazi Scion creature tokens with "Sacrifice this creature: Add {c} to your mana
pool" onto the battlefield.