Combos with Peer into the Abyss

1. Cast Peer into the Abyss by paying {4}{B}{B}{B}, 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.

1. Cast Peer into the Abyss by paying {4}{B}{B}{B}, targeting an opponent whose library size is larger than or equal to their life total.
2. Resolve Peer into the Abyss, causing that opponent to draw cards equal to half their library size and causing them to lose half their life total, rounded up.
3. Orcish Bowmasters triggers for each card drawn, dealing 1 damage to the opponent for each card drawn this way and putting that many +1/+1 counters on an Army you control.
4. The opponent loses the game due to having zero or less life.

1. Cast Peer Into the Abyss targeting an opponent.
2. That player loses half their life and draws half their library.
3. They are then dealt damage by Underworld Dreams equal to the amount of cards they drew.
4. That player loses the game.

1. Cast Peer into the Abyss by paying {4}{B}{B}{B}, causing you to draw half your library and lose half your life total, rounding up each time.
2. Psychosis Crawler triggers for each card you drew, causing each opponent to lose life equal to the number of cards you drew.

1. Cast Peer into the Abyss by paying {4}{B}{B}{B}, causing an opponent to draw cards equal to half their library and causing them to lose half their life total, rounded up.
2. Nekusar triggers for each card drawn this way.
3. Resolve the first trigger, dealing 1 damage to the opponent.
4. If the opponent has 0 or less life, the opponent loses the game due to having zero or less life.
5. Repeat from step 3 for each remaining trigger and/or until the opponent loses the game.

1. With Ob Nixilis, the Hate-Twisted on the battlefield, cast Peer into the Abyss targeting an opponent.
2. Peer into the Abyss would resolve (with card draw and life loss rounded up in instances of odd number of cards or life), and then the static ability on Ob Nixilis, the Hate-Twisted dealing damage for each card drawn.

1. Cast Peer into the Abyss by paying {4}{B}{B}{B}, causing target opponent to draw cards equal to half their deck size, rounded up, and lose at least their entire life total due to Bloodletter of Aclazotz.
2. The opponent loses the game due to having 0 or less life.

1. Cast Peer into the Abyss by paying {4}{B}{B}{B}, causing an opponent to draw cards equal to half their library and causing them to lose half their life total, rounded up.
2. Razorkin Needlehead triggers for each card drawn this way.
3. Resolve the first trigger, dealing 1 damage to the opponent.
4. If the opponent has 0 or less life, the opponent loses the game due to having zero or less life.
5. Repeat from step 3 for each remaining trigger and/or until the opponent loses the game.

Cast Peer into the Abyss by paying {4}{B}{B}{B}, causing you to lose half your life total rounded up and draw your library due to Alhammarret's Archive.

Cast Peer into the Abyss by paying {4}{B}{B}{B}, causing you to lose half your life total rounded up and draw your library due to Teferi's Ageless Insight.

1. Cast Peer into the Abyss by paying {4}{B}{B}{B}, causing you to draw cards equal to half your library size and lose half your life total, rounding up both times.
2. Activate Skirge Familar by discarding any card besides Exsanguinate, adding {B}.
3. Repeat step 2 for all applicable cards in your hand.
4. Cast Exsanguinate by paying all available black mana, causing each opponent to lose life equal to the amound of mana paid minus two, and causing you to gain life equal to the life lost this way.

1. Cast Peer into the Abyss, targeting yourself.
2. Psychich Corrosion triggers for each card you've drawn, milling each opponent's libary completely.
3. Pass the turn to your opponent; They will lose when they attempt to draw a card on their turns.

1. Cast Peer into the Abyss by paying {4}{B}{B}{B}, causing target opponent to draw half their library and lose half their life.
2. Activate Folio of Fancies's last ability by paying {2}{U} and tapping it, causing each opponent to mill cards equal to the number of cards in their hand.
3. During their draw step, the opponent targeted in step 1 loses the game due to drawing from an empty library.

1. Cast Peer into the Abyss by paying {4}{B}{B}{B}, causing the opponent named by Black Vise to draw half their library and lose half their life, rounded up.
2. At the beginning of that opponent's next upkeep, Black Vise triggers, dealing damage to the named opponent equal to the number of cards in their hand minus four.
3. The opponent loses the game due to having zero or less life.

1. Cast Peer into the Abyss by paying {4}{B}{B}{B}, causing you to draw cards equal to half your library size and lose half your life total, rounding up each time.
2. During your cleanup step, discard to your maximum hand size.
3. Feast of Sanity triggers for each card discarded this way.
4. Resolve the first Feast of Sanity trigger, dealing 1 damage to any target and causing you to gain 1 life.
5. Repeat step 4 for each remaining trigger.