Activate Goblin Bombardment by sacrificing another nonland creature.
When the creature dies, Beifong's Bounty Hunters triggers, earthbending a land you control.
Resolve the Goblin Bombardment ability.
Activate Goblin Bombardment by sacrificing the earthbent land.
When the land dies, Fumulus and Beifong's Bounty Hunters trigger.
Resolve the Beifong's Bounty Hunters trigger, returning the land from your graveyard to the battlefield.
Resolve the Fumulus trigger, creating a creature token.
Resolve the Goblin Bombardment ability.
Repeat.
This loop transforms the simple art of sacrifice into an endless engine of devastation, using Goblin Bombardment as the primary outlet to convert your creatures into direct damage. When you sacrifice a creature to feed Goblin Bombardment, Beifong's Bounty Hunters springs into action by earthbending one of your lands into a massive, counter-laden creature based on the fallen casualty's power. You can then sacrifice that very same animated land to Goblin Bombardment; because Beifong's Bounty Hunters ensures the land returns to the battlefield tapped when it dies, it continually recycles itself. Meanwhile, Fumulus, the Infestation watches over the entire cycle, turning every single nontoken sacrifice and land death into a fresh swarm of flying Insect tokens while draining your opponent's life total to absolute zero.