Cast All-Fates Stalker by paying its mana cost.
When All-Fates Stalker enters the battlefield, it triggers, exiling Abdel Adrian.
Abdel Adrian leaves the battlefield, causing Icewind Stalwart to return to the battlefield from exile.
When Icewind Stalwart enters the battlefield, it triggers, blinking All-Fates Stalker.
All-Fates Stalker leaves and enters the battlefield, triggering All-Fates Stalker's first and second abilities.
Resolve the second All-Fates Stalker trigger, returning Abdel Adrian from exile to the battlefield.
When Abdel Adrian enters the battlefield, it triggers, exiling Icewind Stalwart and creating a 1/1 Soldier creature token.
Resolve the All-Fates Stalker trigger from step 5, exiling Abdel Adrian until All-Fates Stalker leaves the battlefield.
Repeat from step 3.

Infinite LTB

Infinite ETB

Infinite creature tokens

Infinite blinking of nonland permanents you control

Abdel Adrian, Gorion's Ward

All-Fates Stalker

Restoration Angel

Cast All-Fates Stalker by paying {3}{W}.
When All-Fates Stalker enters, it triggers, blinking itself as it isn't an Assassin due to Conspiracy.
Repeat step 2.

Conspiracy

Activate Kiki-Jiki by tapping it, creating a token copy of All-Fates Stalker.
When the All-Fates Stalker token enters the battlefield, it triggers, exiling Kiki-Jiki until All-Fates Stalker leaves the battlefield.
Activate Goblin Bombardment by sacrificing the All-Fates Stalker token.
When the All-Fates Stalker token dies, Kiki-Jiki is returned from exile to the battlefield.
Resolve the Goblin Bombardment ability.
Repeat.

Infinite sacrifice triggers

Infinite death triggers

Infinite damage

Kiki-Jiki, Mirror Breaker

Goblin Bombardment

Cast Sister Hospitaller by paying {4}{W}{B}.
When Sister Hospitaller enters, it triggers, returning All-Fates Stalker from your graveyard to the battlefield and causing you to gain life equal to its mana value.
When All-Fates Stalker enters, it triggers, exiling Sister Hospitaller until All-Fates Stalker leaves the battlefield.
Activate Umbral Collar Zealot by sacrificing All-Fates Stalker.
When All-Fates Stalker leaves the battlefield, Sister Hospitaller is returned from exile to the battlefield.
Repeat from step 2.
Resolve all Umbral Collar Zealot abilities.

Infinite lifegain triggers

Infinite lifegain

Infinite surveil 1

Sister Hospitaller

Umbral Collar Zealot

Cast Metamorphosis Fanatic by paying {4}{B}{B}.
When Metamorphosis Fanatic enters, it triggers, returning All-Fates Stalker from your graveyard to the battlefield.
When All-Fates Stalker enters, it triggers, exiling Metamorphosis Fanatic until All-Fates Stalker leaves the battlefield.
Activate Viscera Seer by sacrificing All-Fates Stalker.
When All-Fates Stalker leaves the battlefield, Metamorphosis Fanatic is returned from exile to the battlefield.
Repeat from step 2.
Resolve all Viscera Seer abilities.

Infinite scry 1

Metamorphosis Fanatic

Viscera Seer

Combos with "All-Fates Stalker"