Cast Abdel Adrian either from your hand or from the command zone by paying {4}{W} and commander tax, if applicable.
When Abdel Adrian enters the battlefield, it triggers, exiling Restoration Angel and creating a 1/1 Soldier creature token.
Cast Rescue the Foal by paying {1}{W}, blinking Abdel Adrian and exiling Rescue the Foal.
Abdel Adrian leaves and enters the battlefield, causing Restoration Angel to return to the battlefield from exile, and triggering Abdel Adrian and Restoration Angel's enters-the-battlefield abilities.
Resolve the Abdel Adrian trigger, exiling Restoration Angel and creating a 1/1 Soldier creature token.
Resolve the Restoration Angel trigger, blinking Abdel Adrian.
Repeat from step 4.

Infinite creature tokens

Infinite creature ETB

Infinite creature LTB

Infinite blinking of nonland permanents

Abdel Adrian, Gorion's Ward

Restoration Angel

Pegasus Guardian // Rescue the Foal

Cast Rescue the Foal by paying its mana cost, blinking Felidar Guardian.
Felidar Guardian 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 2.

Infinite landfall triggers

Infinite blinking of permanents

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

Exile all nonland permanents opponents control

Infinite mana lands you control can produce

Preston, the Vanisher

Felidar Guardian

Cast Rescue the Foal by paying {1}{W}, blinking Fiend Hunter and exiling Rescue the Foal.
When Fiend Hunter enters the battlefield, its first ability and Preston trigger.
Resolve the Fiend Hunter trigger, exiling Abdel Adrian.
Resolve the Preston trigger, creating a copy of Fiend Hunter that is a 0/1 Illusion.
When the token Fiend Hunter enters the battlefield, its first ability triggers, exiling the nontoken Fiend Hunter until the token Fiend Hunter leaves the battlefield.
When the nontoken Fiend Hunter leaves the battlefield, its second ability triggers, returning Abdel Adrian from exile to the battlefield.
When Abdel Adrian enters the battlefield, it and Preston trigger.
Resolve the Preston trigger, creating a token copy of Abdel Adrian that is a 0/1 Illusion.
Put the token Abdel Adrian into your graveyard due to the legend rule.
The token Abdel Adrian's enters-the-battlefield ability triggers, choose not to exile a permanent.
Resolve the Abdel Adrian trigger, exiling the token Fiend Hunter and creating a 1/1 Soldier creature token.
When the token Fiend Hunter leaves the battlefield, it triggers, returning the nontoken Fiend Hunter from exile to the battlefield.
Repeat from step 2.

Infinite blinking

Infinite death triggers

Fiend Hunter

Cast Pegasus Guardian // Rescue the Foal by paying its mana cost.
Holding priority, cast Dualcaster Mage by paying its mana cost.
When Dualcaster Mage enters, it triggers, copying Pegasus Guardian // Rescue the Foal, with the copy targeting Dualcaster Mage.
Resolve the copy of Pegasus Guardian // Rescue the Foal, blinking Dualcaster Mage.
Repeat from step 3.

Infinite magecraft triggers

Dualcaster Mage

Cast Rescue the Foal by paying {1}{W}, blinking Lumbering Battlement and exiling Rescue the Foal.
When Lumbering Battlement enters the battlefield, it and Preston trigger.
Resolve the Lumbering Battlement trigger, exiling Fiend Hunter until Lumbering Battlement leaves the battlefield.
When Fiend Hunter leaves the battlefield, its second ability triggers, returning any cards exiled with it to the battlefield under their owner's control.
Resolve the Preston trigger, creating a copy of Lumbering Battlement that is a 0/1 Illusion.
When the token Lumbering Battlement enters the battlefield, it triggers, exiling the nontoken Lumbering Battlement until the token Lumbering Battlement leaves the battlefield.
The nontoken Lumbering Battlement leaves the battlefield, returning Fiend Hunter from exile to the battlefield.
When Fiend Hunter enters the battlefield, its first ability and Preston trigger.
Resolve the Preston trigger, creating a token copy of Fiend Hunter that is a 0/1 Illusion.
When the token Fiend Hunter enters the battlefield, it triggers, choose not to exile a creature.
Resolve the Fiend Hunter trigger, exiling the token Lumbering Battlement.
The token Lumbering Battlement leaves the battlefield, returning the nontoken Lumbering Battlement from exile to the battlefield.
Repeat from step 2.

Lumbering Battlement

Combos with "Pegasus Guardian // Rescue the Foal"