Cast Essence Flux by paying its mana cost, blinking Abdel Adrian.
Abdel Adrian leaves the battlefield, returning Mnemonic Wall and all other cards that were exiled with it to the battlefield.
Abdel Adrian and Mnemonic Wall trigger.
Resolve the Mnemonic Wall trigger, returning Essence Flux from your graveyard to your hand.
Holding priority, activate any number of nonland permanents you control by tapping them, adding at least enough mana to cast Essence Flux.
Resolve the Abdel Adrian trigger, exiling Mnemonic Wall and the mana-producing permanents until Abdel Adrian leaves the battlefield, and creating a 1/1 Soldier creature token for each permanent exiled this way.
Repeat.
This clever loop centers around Abdel Adrian, Gorion's Ward, who acts as the engine by hoarding your other permanents in exile and flooding the board with Soldier tokens every time he enters the battlefield. By casting Essence Flux, you kick off the cycle by blinking Abdel Adrian, which in turn triggers Mnemonic Wall to scoop Essence Flux right back out of your graveyard and into your hand. Because Mnemonic Wall and your mana-producing permanents get swept up by Abdel Adrian's exile trigger each iteration, you can continuously replay Essence Flux while tapping those permanents for mana in between to sustain the loop indefinitely.