Rootpath Purifier + Maze's End + Boundless Realms

Rootpath Purifier

Maze's End

Boundless Realms

How it works

1. Cast Boundless Realms by paying 6, causing you to search your library for a number of Gate cards equal to the number of lands you control, and put them onto the battlefield tapped.
2. Activate Maze's End's second ability by paying 3, tapping it and returning it from the battlefield to your hand, searching your library for a Gate, putting it onto the battlefield and causing you to win the game.