Cast Appa either from your hand or from the command zone by paying {W}{W} plus commander tax, if applicable.
When Appa enters, its first ability triggers, exiling Restoration Angel with the ability to cast it later from exile.
Cast Restoration Angel from exile by paying {0}.
Appa's second ability triggers, creating a 1/1 Ally creature token
When Restoration Angel enters, it triggers, blinking Appa.
Repeat from step 2.

Infinite storm count

Infinite creature tokens

Infinite creature ETB

Infinite creature LTB

Appa, Steadfast Guardian

Restoration Angel

Pearl Medallion

The Wind Crystal

Cast Whitemane Lion by paying {0} and 2 life due to Defiler of Faith and Pearl Medallion.
Defiler of Faith triggers, creating a 1/1 Soldier creature token.
When the Soldier enters, Soul Warden triggers, causing you to gain life.
Resolve Whitemane Lion. When it enters, it and Soul Warden trigger.
Resolve the Whitemane Lion trigger, returning it from the battlefield to your hand.
Resolve the Soul Warden trigger, causing you to gain life.
Repeat.

Infinite lifegain triggers

Defiler of Faith

Soul Warden

Whitemane Lion

Cast Whitemane Lion by paying {W}.
Spider-Man India triggers, putting a +1/+1 counter on Crystalline Crawler.
When Whitemane Lion enters, it triggers, returning itself from the battlefield to your hand.
Activate Crystalline Crawler by removing a +1/+1 counter from it, adding {W}.
Repeat.

Spider-Man India

Crystalline Crawler

Cast Graceful Reprieve by paying {W}, targeting Eternal Witness.
Activate Phyrexian Altar by sacrificing Eternal Witness, adding {W}.
When Eternal Witness dies, Graceful Reprieve triggers, returning Eternal Witness from your graveyard to the battlefield.
When Eternal Witness enters the battlefield, it triggers, returning Graceful Reprieve from your graveyard to your hand.
Repeat.

Infinite death triggers

Infinite magecraft triggers

Infinite creature sacrifice triggers

Graceful Reprieve

Phyrexian Altar

Eternal Witness

Cast Graceful Reprieve by paying {W}, targeting Archaeomancer.
Activate Phyrexian Altar by sacrificing Archaeomancer, adding {W}.
When Archaeomancer dies, Graceful Reprieve triggers, returning Archaeomancer from your graveyard to the battlefield.
When Archaeomancer enters the battlefield, it triggers, returning Graceful Reprieve from your graveyard to your hand.
Repeat.

Archaeomancer

Cast Graceful Reprieve by paying {W}, targeting Living Lightning.
Activate Phyrexian Altar by sacrificing Living Lightning, adding {W}.
When Living Lightning dies, it and Graceful Reprieve trigger.
Resolve the Living Lightning trigger, returning Graceful Reprieve from your graveyard to your hand.
Resolve the Graceful Reprieve trigger, returning Living Lightning from your graveyard to the battlefield.
Repeat.

Combos with "Pearl Medallion"