Cast Angel of Indemnity by paying its mana cost.
When Angel of Indemnity enters, it triggers, returning Felidar Guardian from your graveyard to the battlefield.
When Felidar Guardian enters, it and Preston trigger.
Resolve the Felidar Guardian trigger, blinking another permanent you control.
Resolve the Preston trigger, creating a token copy of Felidar Guardian that is a 0/1 Illusion.
When the Felidar Guardian token enters the battlefield, it triggers, blinking the nontoken Felidar Guardian.
Repeat from step 3.

Exile all nonland permanents opponents control

Infinite creature ETB

Infinite creature LTB

Infinite blinking of permanents

Infinite creature tokens

Infinite landfall triggers

Infinite mana lands you control can produce

Infinite mana lands you control that enter the battlefield untapped can produce

Preston, the Vanisher

Felidar Guardian

Angel of Indemnity

Cast Felidar Guardian by paying {3}{W}.
When Felidar Guardian enters the battlefield, it triggers, targeting Angel of Indemnity.
Holding priority, activate Ashnod's Altar by sacrificing Felidar Guardian, adding {2}.
Resolve the Felidar Guardian ability, blinking Angel of Indemnity.
When Angel of Indemnity enters the battlefield, it triggers, returning Felidar Guardian from your graveyard to the battlefield.
Repeat from step 2.

Infinite creature sacrifice triggers

Infinite death triggers

Infinite colorless mana

Ashnod's Altar

Cast Fiend Hunter by paying its mana cost.
When Fiend Hunter enters, its first ability triggers, exiling Angel of Indemnity.
Activate Altar of Dementia by sacrificing Fiend Hunter.
When Fiend Hunter dies, its second ability triggers, returning Angel of Indemnity from exile to the battlefield.
When Angel of Indemnity enters, it triggers, returning Fiend Hunter from your graveyard to the battlefield.
When Fiend Hunter enters, its first ability triggers, exiling Angel of Indemnity.
Resolve the Altar of Dementia ability.
Repeat from step 3.

Infinite mill

Infinite self-mill

Altar of Dementia

Fiend Hunter

Cast Animate Dead by paying {1}{B}.
When Animate Dead enters, it trigger, returning Angel of Indemnity from your graveyard to the battlefield and attaching Animate Dead to it.
When Angel of Indemnity enters, it triggers, targeting Dance of the Dead.
Holding priority, activate Altar of Dementia by sacrificing Angel of Indemnity.
Resolve the Angel of Indemnity trigger, returning Dance of the Dead from your graveyard to the battlefield.
When Dance of the Dead enters, it trigger, returning Angel of Indemnity from your graveyard to the battlefield and attaching Dance of the Dead to it.
When Angel of Indemnity enters, it triggers, targeting Animate Dead.
Holding priority, activate Altar of Dementia by sacrificing Angel of Indemnity.
Resolve the Angel of Indemnity trigger, returning Animate Dead from your graveyard to the battlefield.
Repeat from step 2.

Animate Dead

Dance of the Dead

Activate Saffi by sacrificing it, targeting Angel of Indemnity
Activate Altar of Dementia by sacrificing Angel of Indemnity
When Angel of Indemnity dies, Saffi triggers, returning Angel of Indemnity from your graveyard to the battlefield.
When Angel of Indemnity enters, it triggers, returning Saffi from your graveyard to the battlefield.
Resolve the Altar of Dementia ability.
Repeat.

Saffi Eriksdotter

Activate Bartolomé del Presidio by sacrificing Angel of Indemnity.
When Angel of Indemnity dies, Kaya's Ghostform triggers, returning Angel of Indemnity from your graveyard to the battlefield.
When Angel of Indemnity enters, it triggers, returning Kaya's Ghostform from your graveyard to the battlefield attached to Angel of Indemnity
Resolve the Bartolomé del Presidio ability.
Repeat.

Infinite +1/+1 counters on a creature

Kaya's Ghostform

Bartolomé del Presidio

If Aminatou has two or more loyalty counters on it, activate Heart of Kiran by removing a loyalty counter from Aminatou, causing Heart of Kiran to become an artifact creature until end of turn.
Repeat step 1 until Aminatou has one loyalty counter on it.
Activate Aminatou's second loyalty ability by removing a loyalty counter from it, targeting Angel of Indemnity.
Aminatou is put into your graveyard as a state-based action due to having zero loyalty.
Resolve the Aminatou ability, blinking Angel of Indemnity.
When Angel of Indemnity enters the battlefield, it triggers, returning Aminatou from your graveyard to the battlefield.
Repeat.

Aminatou, the Fateshifter

Heart of Kiran

Activate Ashnod's Altar by sacrificing the creature with Deathrender attached, adding {C}{C}.
When the creature dies, Deathrender triggers, putting Angel of Indemnity from your hand onto the battlefield.
When Angel of Indemnity enters the battlefield, it and Cloudstone Curio trigger.
Resolve the Cloudstone Curio trigger, choosing to return nothing to your hand from the battlefield.
Resolve the Angel of Indemnity trigger, returning any nonartifact creature card from your graveyard to the battlefield.
When the creature enters the battlefield, Cloudstone Curio triggers, returning Angel of Indemnity from the battlefield to your hand.
Activate Deathrender's equip ability by paying {2}, attaching it to the creature.
Repeat.

Combos with "Angel of Indemnity"