Cast Beacon of Immortality by paying {5}{W}, doubling your life total and shuffling it into your library.
Cradle of Vitality triggers, causing you to pay {1}{W} to put a number of +1/+1 counters on Walking Archive equal to the life you gained.
At the beginning of the next upkeep, Walking Archive triggers, causing the active player to draw cards equal to the number of +1/+1 counters on Walking Archive.
If the player attempts to draw from an empty library, they lose the game.
If they didn't lose the game, the player will attempt to draw a card during their draw step and lose the game due to attempting to draw from an empty library.
Repeat from step 3 for each remaining opponent.

Each opponent loses the game at the beginning of their next upkeep

Cradle of Vitality

Beacon of Immortality

Walking Archive

Cast Body of Research by paying {G}{G}{G}{U}{U}{U}, creating a 0/0 Fractal creature token and then putting a number of +1/+1 counters on it equal to your deck size.
Kill the Fractal, triggering The Ozolith, moving the Fractal's counters onto The Ozolith.
At the beginning of your combat phase, The Ozolith triggers, moving its counters onto Walking Archive.
At the beginning of each opponent's upkeep, they will draw cards equal to the number of counters on Walking Archive. This should result in them drawing from an empty library either during their upkeep or their subsequent draw step, and thus losing the game.

Infinite card draw for opponents

Infinite draw triggers for each opponent

Body of Research

The Ozolith

Cast Body of Research by paying {G}{G}{G}{U}{U}{U}, creating a 0/0 Fractal creature token and then putting a number of +1/+1 counters on it equal to your deck size.
Kill the Fractal, triggering Resourceful Defense, moving the Fractal's counters onto Walking Archive.
At the beginning of each opponent's upkeep, they will draw cards equal to the number of counters on Walking Archive. This should result in them drawing from an empty library either during their upkeep or their subsequent draw step, and thus losing the game.

Resourceful Defense

Activate Bloodflow Connoisseur by sacrificing Walking Archive.
When Walking Archive dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to its replacement effect.
Resolve the Bloodflow Connoisseur ability.
Repeat.

Infinite +1/+1 counters on a creature

Infinite ETB

Infinite LTB

Infinite death triggers

Infinite sacrifice triggers

Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight

Bloodflow Connoisseur

Cast Revenge by paying {4}{W}{B}, doubling your life total and causing an opponent to lose half their life total, rounded up.
Cradle of Vitality triggers, causing you to pay {1}{W} to put a number of +1/+1 counters on Walking Archive equal to the life you gained.
At the beginning of the next upkeep, Walking Archive triggers, causing the active player to draw cards equal to the number of +1/+1 counters on Walking Archive.
If the player attempts to draw from an empty library, they lose the game.
If they didn't lose the game, the player will attempt to draw a card during their draw step and lose the game due to attempting to draw from an empty library.
Repeat from step 3 for each remaining opponent.

Combos with "Walking Archive"