During the opponent's end step immediately before your turn, cast Approach of the Second Sun by paying {6}{W} using Whirlwing Stormbrood // Dynamic Soar.
In response, cast Endless Detour by paying its mana cost, putting Approach of the Sun on top of your library.
In your draw step, draw Approach of the Second Sun.
Cast Approach of the Second Sun by paying {6}{W}, winning the game.

Win the game

Approach of the Second Sun

Endless Detour

Whirlwing Stormbrood // Dynamic Soar

On the end step prior to your turn, cast a copy of Channel from exile by paying {G}{G}, unpreparing Yavimaya Bloomsage.
Use Channel's ability by paying 1 life, adding {C}.
Repeat step 2 until you have exactly 1 life.
At the beginning of your upkeep, Near-Death Experience triggers, causing you to win the game.

Near-Death Experience

Yavimaya Bloomsage // Channel

Activate Myojin of Roaring Blades by removing an indestructible counter from it.
Holding priority, cast Sway of the Stars by paying {8}{U}{U}, causing each player to shuffle their hand, graveyard and all permanents they own into their library, then causing each player to draw seven cards and set their life total to 7.
Resolve the Myojin of Roaring Blades ability, dealing 7 damage to each of up to three opponents.
Each opponent loses the game due to having 0 life.

Each opponent loses the game

Near-infinite lifeloss for all players

Shuffle all hands, graveyards and permanents on the battlefield into their owner's library

Sway of the Stars

Myojin of Roaring Blades

Cast an instant or sorcery spell by paying its mana cost, triggering Ashling.
Holding priority, cast Worldfire by paying {6}{R}{R}{R}.
Ashling triggers, causing you to rummage.
Resolve Worldfire, exiling all permanents, all cards in all hands and graveyards, and setting each player's life total to 1.
Resolve the Ashling trigger from step 1, dealling 2 damage to each opponent.
Each opponent loses the game as a state-based action due to having less than 0 life.

Exile all cards in hands and graveyards

Exile all permanents

Mass Land Denial

Ashling, Flame Dancer

Worldfire

Declare Fire Lord Azula as an attacker, triggering its firebending ability, adding {R}{R}.
Holding priority, cast Walk the Aeons by paying its mana cost.
Fire Lord Azula's second ability triggers, copying Walk the Aeons.
Holding priority, cast Narset's Reversal by paying {U}{U}, targeting the original Walk the Aeons spell.
Fire Lord Azula's second ability triggers, copying Narset's Reversal, targeting the original Narset's Reversal.
Resolve the copy of Narset's Reversal, causing you to copy Narset's Reversal targeting the original Walk the Aeons spell, and then return the original Narset's Reversal to your hand.
Resolve the copy of Narset's Reversal, copying Walk the Aeons and returning the original Walk the Aeons to your hand.
Resolve both copies of Walk the Aeons from steps 3 and 7, causing you to take two extra turns after this one.
Repeat during your second extra turn.

Combos with "Whirlwing Stormbrood // Dynamic Soar"