When Lumbering Battlement enters the battlefield, it triggers, exiling Abdel Adrian until Lumbering Battlement leaves the battlefield.
Abdel Adrian leaves the battlefield, ending its effect, causing Sakashima of a Thousand Faces to return from exile to the battlefield as a copy of Lumbering Battlement.
When Sakashima of a Thousand Faces enters the battlefield, it triggers, exiling Lumbering Battlement until Sakashima of a Thousand Faces leaves the battlefield.
Lumbering Battlement leaves the battlefield, ending its effect, causing Abdel Adrian to return from exile to the battlefield.
When Abdel Adrian enters the battlefield, it triggers, exiling Sakashima of a Thousand Faces and any number of other nonland permanents you control until Abdel Adrian leaves the battlefield and creating at least one 1/1 Soldier creature token.
Sakashima of a Thousand Faces leaves the battlefield, ending its effect, causing Lumbering Battlement to return to the battlefield from exile.
Repeat from step 2.
This clever loop creates an infinite cascade of entry and departure triggers by bouncing our key permanents back and forth. When Lumbering Battlement enters the battlefield, it exiles Abdel Adrian, Gorion's Ward, which in turn drops the safeguards keeping Sakashima of a Thousand Faces in exile. Because Sakashima of a Thousand Faces enters as a copy of Lumbering Battlement, it immediately triggers to swallow up the original Lumbering Battlement, releasing Abdel Adrian, Gorion's Ward once more to restart the cycle. Along the way, Abdel Adrian's ability lets you pile up an infinite army of 1/1 white Soldier creature tokens while infinitely blinking any other nonland permanents you wish to bring along for the ride.