Cast Surge to Victory by paying 4, exiling Settle Beyond Reality from your graveyard and giving creatures you control +5/+0 until end of turn.
Declare Aurelia as an attacker.
Aurelia triggers, untapping all creatures you control and causing you to get an additional combat phase after this one.
Deal combat damage to an opponent using Aurelia.
Surge to Victory triggers, casting a copy of Settle Beyond Reality without paying its mana cost.
Resolve Settle Beyond Reality, blinking Aurelia.
Repeat from step 2 each combat phase.
You may also choose both of Settle Beyond Reality's modes to exile any number of creatures opponents control.
This clever loop hinges on the synergy between Surge to Victory exiling Settle Beyond Reality to pump your team and set up a devastating combat trigger. When Aurelia, the Warleader crashes in for her initial attack, her first-combat trigger untaps your creatures and grants you an extra combat phase. Connecting with that lethal combat damage triggers Surge to Victory to cast a free copy of Settle Beyond Reality from exile, which blinks Aurelia and resets her first-attack trigger. By repeating this cycle, you generate infinite combat phases and damage while clearing out every single creature your opponents control.