Aurelia, the Warleader + Adarkar Valkyrie + Goblin Bombardment
Aurelia, the Warleader
Adarkar Valkyrie
Goblin Bombardment
Infinite combat phasesInfinite damageInfinite death triggersInfinite creature ETBInfinite creature LTBInfinite creature sacrifice triggersInfinite untap of creatures you controlInfinite mana creatures you control can produce
How it works
Declare Aurelia as an attacker.
Aurelia triggers, causing you to untap all creatures you control and to get an additional combat phase after this one.
Holding priority, activate Adarkar Valkyrie by tapping it, making it so the next time Aurelia dies this turn it will be returned to the battlefield.
Activate Goblin Bombardment by sacrificing Aurelia.
Adarkar Valkyrie triggers, returning Aurelia to the battlefield.
Resolve the Goblin Bombardment's ability, dealing 1 damage to any target.
Repeat.
This brilliant loop turns your ultimate angel warrior into explosive, repeating artillery by manipulating Adarkar Valkyrie's delayed trigger. When you declare Aurelia, the Warleader as an attacker, her triggered ability untaps Adarkar Valkyrie so it's ready to tap and mark Aurelia for resurrection the moment she dies. Sacrificing Aurelia to Goblin Bombardment fulfills that doom, dealing 1 damage to any target while immediately triggering the Valkyrie to return Aurelia fresh to the battlefield. Because a newly returned Aurelia enters the field ready to attack again—and because her attack trigger grants an additional combat phase—you can endlessly repeat this cycle to incinerate your opponents through a never-ending sequence of combat steps and sacrifices.