Cast Essence Flux by paying its mana cost, blinking Abdel Adrian.
Abdel Adrian leaves the battlefield, returning Greenwarden of Murasa and all other cards that were exiled with it to the battlefield.
Abdel Adrian and Greenwarden of Murasa trigger.
Resolve the Greenwarden of Murasa 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 Greenwarden of Murasa 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 ingenious loop relies on a clever dance between Abdel Adrian, Gorion's Ward and Greenwarden of Murasa, kickstarted by a single cast of Essence Flux. When Abdel Adrian blinks, it exiles Greenwarden of Murasa alongside your mana-producing permanents, and every time Greenwarden of Murasa re-enters the battlefield, its triggered ability conveniently pulls Essence Flux right back out of your graveyard to hand. Because Abdel Adrian's exile trigger lets you immediately scoop up those tapped mana sources alongside the creature, you generate an endless engine of tokens, enter-the-battlefield triggers, and mana to recast the instant over and over again.