Cast Demonic Consultation by paying {B}, naming Thassa's Oracle and thus exiling your library due to you not having a card named Thassa's Oracle in your library.
Cast Thassa's Oracle by paying {U}{U}.
Thassa's Oracle enters the battlefield, causing you to win the game.

Exile your library

Win the game

Demonic Consultation

Thassa's Oracle

Cast Demonic Consultation by paying {B}, naming Laboratory Maniac and thus exiling your library due to you not having a card named Laboratory Maniac in your library.
Draw a card, causing you to win the game due to Laboratory Maniac.

Laboratory Maniac

Cast Demonic Consultation by paying {B}, naming Jace, Wielder of Mysteries and thus exiling your library due to you not having a card named Jace, Wielder of Mysteries in your library.
Activate Jace's first loyalty ability by putting a loyalty counter on it, causing target player to mill two cards and you to win the game due to drawing from an empty library.

Jace, Wielder of Mysteries

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 Demonic Consultation by paying {B}, exiling the top six cards of your library and then revealing Approach of the Second Sun and putting it into your hand.
Cast Approach of the Second Sun by paying {6}{W}, causing you to win the game.

Approach of the Second Sun

During your upkeep, activate Timestream Navigator by paying {2}{U}{U}, tapping it and putting it from the battlefield onto the bottom of your library, causing you to take an extra turn after this one.
Move to your draw step, and draw a card.
Cast Demonic Consultation by paying {1}{B}, naming Timestream Navigator and exiling your entire library except Timestream Navigator and putting Timestream Navigator into your hand.
Cast Timestream Navigator by paying {1}{U}.
During your extra turn's upkeep, activate Timestream Navigator by paying {2}{U}{U}, tapping it and putting it from the battlefield onto the bottom of your library, causing you to take an extra turn after this one.
Move to your draw step, drawing Timestream Navigator.
Repeat from step 4.

Infinite turns

Skip your draw steps

Lock

Timestream Navigator

Cast Demonic Consultation by paying {B}, naming a card not in your library and exiling your library.
Cast Beacon of Immortality by paying {5}{W}, doubling your life total and shuffling it into your library.
Cast Beacon of Immortality from the top of your library by paying 6 life, doubling your life total and shuffling it into your library.
Repeat step 3.

Infinite lifegain

Infinite lifegain triggers

Infinite magecraft triggers

Infinite storm count

Beacon of Immortality

Bolas's Citadel

Cast Demonic Consultation by paying {B}, naming a card not in your library and exiling your library.
Activate Jarad by paying {1}{B}{G} and sacrificing Cosmogoyf, causing each opponent to lose life equal to Cosmogoyf's power.

Combos with "Demonic Consultation"