Kozilek, World’s End

{x}{c}: Create x 0/1 colorless Eldrazi scion creature tokens with: {t}Sacrifice this creature, add one mana of any color.
{3}: Create a colorless Eldrazi creature token named Kozilek’s servant with: at the beginning of your upkeep, add an energy counter to Kozilek. If Kozilek has 20 or more energy counters on him, you win the game.