Icewind Stalwart in exile (Icewind Stalwart exiled by Glorious Protector).
Glorious Protector on the battlefield.
Ephemerate in hand.
({W} magic symbol) available.
Steps
Cast Ephemerate by paying ({W} magic symbol) , blinking Glorious Protector and exiling Ephemerate.
Glorious Protector leaves and enters the battlefield, returning Icewind Stalwart from exile to the battlefield, and triggering both Icewind Stalwart and Glorious Protector's enters-the-battlefield abilities.
Resolve the Glorious Protector trigger, exiling Icewind Stalwart until Glorious Protector enters the battlefield.
Resolve the Icewind Stalwart trigger, blinking Glorious Protector.
Repeat from step 2.
Results
Infinite blinking of Glorious Protector and non-Angel creatures you control.