Activate Lightning Greaves by paying {0}, attaching it to Cephalid Illusionist.
Cephalid Illusionist triggers, causing you to mill three cards.
Whenever a permanent card is put into your graveyard, exile it with a croak counter.
Activate Lightning Greaves by paying {0}, attaching it to Grolnok.
Repeat step 1 through 4 until your devotion to blue is greater than or equal to the number of cards in your library.
Cast Thassa's Oracle from exile by paying {U}{U}.
Thassa's Oracle enters the battlefield, winning you the game.

Infinite self-mill

Win the game

Grolnok, the Omnivore

Cephalid Illusionist

Lightning Greaves

Thassa's Oracle

Activate Timestream Navigator by paying {2}{U}{U}, tapping it and putting it on the bottom of your library, causing you to take an extra turn after this one.
Activate Cellar Door by paying {3} and tapping it, causing you to put Timestream Navigator from the bottom of your library into your graveyard and create a 2/2 Zombie creature token.
Grolnok triggers, exiling Timestream Navigator with a croak counter on it.
Cast Timestream Navigator from exile by paying {1}{U}.
Repeat each turn.

Lock

Infinite turns

Timestream Navigator

Cellar Door

Activate Sensei's Divining Top by tapping it, causing you to draw a card and putting Sensei's Divining Top from the battlefield onto the top of your library.
Jace's Erasure triggers, causing you to mill Sensei's Divining Top.
When Sensei's Divining Top is milled, Grolnok triggers, exiling Sensei's Divining Top with a croak counter on it.
Cast Sensei's Divining Top from exile by paying {0}.
Repeat.

Infinite card draw

Infinite draw triggers

Near-infinite storm count

Sensei's Divining Top

Jace's Erasure

Doc Aurlock, Grizzled Genius

Cast Me from exile by paying {2}{G}{U}{R}.
Activate Food Chain by exiling Me, adding six {G}, {U} or {R} that can only be spent to cast creature spells.
Repeat.

Infinite LTB

Infinite ETB

Infinite storm count

Infinite colored mana that can only be spent to cast creature spells

Me, the Immortal

Food Chain

Activate Food Chain by exiling Skullbriar, adding {B}{B}{B} or {G}{G}{G} that can only be spent to cast creature spells.
Cast Skullbriar from exile by paying {B}{G}.
Repeat.

Skullbriar, the Walking Grave

Combos with "Grolnok, the Omnivore"