Activate Goblin Bombardment by sacrificing Archon of Falling Stars.
When Archon of Falling Stars dies, it triggers, returning Animate Dead from your graveyard to the battlefield.
When Animate Dead enters the battlefield, it triggers, returning Archon of Falling Stars from your graveyard to the battlefield, and attaching Animate Dead to it.
Resolve the Goblin Bombardment ability, dealing 1 damage to any target.
Repeat.
This clever loop turns the graveyard into a revolving door by exploiting the continuous interaction between Archon of Falling Stars and Animate Dead. When you sacrifice the Archon to Goblin Bombardment, its death trigger pulls Animate Dead back out of the graveyard, which in turn triggers its ability to resurrect the Archon right back onto the battlefield. Because Goblin Bombardment provides a free, instant-speed sacrifice outlet to start the cycle over again, you can repeat this process as many times as you like to safely incinerate any target with infinite damage.