Kozilek, Nemesis of Allies

When Kozilek enters the battlefield, draw up to X cards, where X is the number of land cards in your opponent's graveyards.
Menace, Annihilator 4
Whenever Kozilek attacks, create a 1/1 colorless Eldrazi Scion creature token with "Sacrifice this creature: Add {c} to your mana pool.