Activate Vizkopa Guildmage's second ability by paying {1}{W}{B}, causing each opponent to lose life whenever you gain life this turn.
Cast Plunge into Darkness by paying {1}{B}, choosing to pay an amount of life equal to the greatest lifetotal among opponent, then look at that many cards from the top of your library, putting one into your hand and exiling the rest.
Activate Children of Korils by sacrificing it, causing you to gain life equal to the amount of life you've lost this turn.
Vizkopa Guildmage triggers, causing each opponent to lose life equal to the amount of life you gained.
Each opponent loses the game due to having zero or less life.

Each opponent loses the game

Near-infinite lifeloss

Children of Korlis

Vizkopa Guildmage

Plunge into Darkness

Cast Approach of the Second Sun by paying {6}{W}, causing you to gain seven life and put Approach of the Second Sun into your library seventh from the top.
Cast Plunge into Darkness by paying {1}{B} and seven life, looking at the top seven cards of your library, putting Approach of the Second Sun into your hand and exiling the rest.
Cast Approach of the Second Sun by paying {6}{W}, causing you to win the game.

Combos with "Plunge into Darkness"