Icewind Stalwart in exile (Icewind Stalwart exiled by Glorious Protector).
Brago and Glorious Protector on the battlefield.
Brago does not have summoning sickness and cannot be blocked by an opponent.
Steps
Deal combat damage to an opponent using Brago.
Brago triggers, blinking Glorious Protector.
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 3.
Results
Infinite blinking of Glorious Protector and non-Angel creatures you control.