This clever loop turns Thopter Squadron into an endless engine of destruction by leveraging the passive twilight side of Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight. Because Eirdu's back face grants persist to your other nontoken creatures, sacrificing Thopter Squadron to Goblin Bombardment causes it to return from the graveyard with a -1/-1 counter—wait, the synergy thrives because its own counters and resurrection properties let the cycle spin, or you can leverage its native abilities alongside the dawn side's convoke to recast and rebuild. Goblin Bombardment provides the sacrificial outlet to convert this relentless recycling into infinite damage to any target.