Declare your commander as an attacker, attacking the opponent that has the highest life total or that is tied for the highest life total.
Your commander triggers, creating two Food, two Clue, and two Treasure artifact tokens.
Activate Time Sieve by tapping it and sacrificing five artifacts, causing you to take an extra turn after this one.
Repeat each turn.

Infinite turns

Lock

Guild Artisan

Time Sieve

Academy Manufactor

Declare Silas Renn and your other commander as attackers, attacking the opponent with the highest life total among your opponents and/or an opponent who is tied for the highest life total among your opponents.
Silas Renn and your other commander trigger, creating four Treasure tokens.
Activate Time Sieve by tapping it, sacrificing it and the four Treasures, causing you to take an extra turn after this one.
Deal combat damage with Silas Renn.
Silas Renn triggers, allowing you to cast Time Sieve from your graveyard this turn.
Cast Time Sieve by paying {U}{B}.
Repeat each turn.

Silas Renn, Seeker Adept

Declare the creature with Breath of Fury attached and your commander as attackers, attacking the opponent with the highest life total among your opponents or an opponent that is tied for the highest life total among your opponents.
Your commander triggers, creating two 2/2 Cat creature tokens with haste due to Jinnie Fay.
Deal combat damage using the creature that has Breath of Fury attached.
Breath of Fury triggers, causing you to sacrifice the creature it is attached to, then attach Breath of Fury to the Cat token, then causing you to untap all creatures you control and to get an additional combat phase after this one.
Repeat each combat phase.
Once you have infinite Cat tokens, you may instead make Dog tokens using Jinnie Fay or Treasure tokens.

Infinite artifact ETB

Infinite artifact LTB

Infinite artifact sacrifice triggers

Infinite artifact tokens

Infinite colored mana

Infinite combat damage

Infinite combat phases

Infinite creature tokens with haste

Infinite death triggers

Infinite creature ETB

Infinite creature LTB

Infinite mana creatures you control can produce

Infinite creature sacrifice triggers

Infinite Treasure tokens

Infinite untap of creatures you control

Jinnie Fay, Jetmir's Second

Breath of Fury

Combos with "Guild Artisan"