Perfect Harmony

Singnature - Each creature in your starting deck
is no more than one color, each land in your
starting deck is no more than one basic land type.
(If this card is your chosen singnature, you may
cast it once from outside the game.)
This spell can't be countered.
You win the game if you control a land of each
basic land type and a creature of each color, and Perfect Harmony was cast from outside the
game.