Starkiller Base

At the beginning of your upkeep put a charge counter on Starkiller Base. When Starkiller Base has twenty or more charge counters on it, you win the game.
{t}: Add {c}{c} to your mana pool. Spend this mana only to cast spells with converted mana cost 5 or greater.
{3}, {t}, Sacrifice a land: put a charge counter on Starkiller Base