Infinite creature ETBInfinite creature LTBInfinite damageInfinite death triggersInfinite magecraft triggersInfinite creature sacrifice triggersInfinite recursion of creatures you control
How it works
Cast Continue? by paying its mana cost
Holding priority, cast Dualcaster Mage by paying its mana cost.
When Dualcaster Mage enters, it triggers, targeting Continue?.
Holding priority, activate Goblin Bombardment by sacrificing Dualcaster Mage.
Resolve the Dualcaster Mage trigger, copying Continue?
Resolve the Continue? copy, returning Dualcaster Mage from your graveyard to the battlefield.