Cast Siren's Ruse by paying its mana cost, blinking Abdel Adrian.
Abdel Adrian leaves the battlefield, returning Eternal Witness and all other cards that were exiled with it to the battlefield.
Abdel Adrian and Eternal Witness trigger.
Resolve the Eternal Witness trigger, returning Siren's Ruse 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 Siren's Ruse.
Resolve the Abdel Adrian trigger, exiling Eternal Witness 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 elegant engine centers around Abdel Adrian, Gorion's Ward, who constantly resets the board by exiling your own assets and flooding the field with Soldier tokens whenever he enters. To keep the loop going, Siren's Ruse acts as the initial spark that blinks Abdel Adrian, triggering a cascade of enters-the-battlefield abilities. Amidst the chaos, Eternal Witness quietly does the heavy lifting from the graveyard, diving back into your hand each cycle so you can recast Siren's Ruse over and over again.