Cast Emrakul by paying {13} reduced by its first ability.
Emrakul's second ability triggers, causing you to gain control of an opponent's next turn and giving them an additional turn after that one.
Move to that opponent's next turn.
Unwinding Clock triggers, untapping all artifacts you control.
Activate artifacts by tapping them to add enough mana to cast Emrakul, plus an additional {1}.
Activate Erratic Portal by paying {1} and tapping it, returning Emrakul from the battlefield to your hand.
Repeat until the opponent you are controlling each extra turn has lost the game.
Repeat for each remaining opponent.

Infinite turns for each opponent

You control your opponents on each of their turns

Lock

Emrakul, the Promised End

Erratic Portal

Unwinding Clock

Vedalken Orrery

Cast Rishkar's Expertise by paying {4}{G}{G}, causing you to draw thirteen cards.
At the beginning of your next upkeep, Triskaidekaphile triggers, causing you to win the game.

Win the game at the beginning of your next upkeep

Triskaidekaphile

Rishkar's Expertise

Cast Return of the Wildspeaker by paying {4}{G}, causing you to draw thirteen cards.
At the beginning of your next upkeep, Triskaidekaphile triggers, causing you to win the game.

Combos with "Emrakul, the Promised End"