Sheoldred, the Apocalypse + Peer into the Abyss

Sheoldred, the Apocalypse
Peer into the Abyss

Requires
Sheoldred, the Apocalypse must be on the battlefield. Peer into the Abyss must be in hand. An opponent has a library size that is at least half their life total. Mana needed: 4bbb
Steps
  1. Cast Peer into the Abyss by paying 4bbb, causing an opponent to draw cards equal to half their library size and lose half their life total, rounded up.
  2. Sheoldred's second ability triggers for each card drawn this way.
  3. Resolve the first Sheoldred trigger, causing the opponent to lose 2 life.
  4. Repeat step 3 until the opponent loses the game due to having zero or less life.
Results
Near-infinite card draw for target opponent. Near-infinite draw triggers for target opponent. Near-infinite lifeloss for target opponent. Target opponent loses the game.