Nekusar, the Mindrazer + Hive Mind + Enter the Infinite
Nekusar, the Mindrazer
Hive Mind
Enter the Infinite
Each opponent loses the gameInfinite card draw for all playersInfinite draw triggers for all playersNear-infinite damage
How it works
Cast Enter the Infinite by paying 8.
Hive Mind triggers, causing each opponent to copy Enter the Infinite.
Resolve the first opponent's Enter the Infinite, causing the opponent to draw their library, and then put a card on top of their library.
Nekusar triggers for each card they draw this way, dealing damage to the opponent equal to the number of cards they drew.
If the opponent has zero or less life, they lose the game.
Repeat step 3 for each other opponent.
If any opponents remain, resolve your Enter the Infinite, causing you to draw your library, and then put a card on top of your library.
Move to the first opponent's turn, causing them to draw two cards during their draw step due to Nekusar, and lose the game due to drawing from an empty library.
Repeat step 8 as necessary for each other opponent.