Exodia, the Forbidden One

Chain (The power and toughness of a creature with
chain is equal to the total power and toughness of all creatures you control with chain.)
When this card is in the battlefield under your
control and you control the "Left Leg of the Forbidden One," the "Right Leg of the
Forbidden One," the "Left Arm of the
Forbidden One," and the "Right Arm of the Forbidden One," you win the game.