Fiend Hunter + Phyrexian Delver + Trostani, Selesnya's Voice + Goblin Bombardment

Fiend Hunter

Phyrexian Delver

Trostani, Selesnya's Voice

Goblin Bombardment

How it works

1. Cast Fiend Hunter by paying 1.
2. Fiend Hunter enters the battlefield, triggering its first ability and Trostani.
3. Resolve the Trostani trigger, causing you to gain life equal to Fiend Hunter's toughness.
4. Resolve the Fiend Hunter trigger, exiling Phyrexian Delver until Fiend Hunter leaves the battlefield.
5. Activate Goblin Bombardment by sacrificing Fiend Hunter.
6. Fiend Hunter leaves the battlefield, triggering its second ability, returning Phyrexian Delver from exile to the battlefield.
7. Phyrexian Delver enters the battlefield, triggering itself and Trostani.
8. Resolve the Trostani trigger, causing you to gain life equal to Phyrexian Delver's toughness.
9. Resolve the Phyrexian Delver trigger, returning Fiend Hunter from your graveyard to the battlefield and causing you to lose three life.
10. Repeat from step 2.
11. Resolve all Goblin Bombardment abilities, dealing infinite damage to any target(s).

This loop relies on an endless cycle of resurrection and sacrifice between Fiend Hunter and Phyrexian Delver, where each creature constantly pulls the other back from the brink. Goblin Bombardment provides the sacrificial outlet to trigger Fiend Hunter's leave-the-battlefield effect while turning the entire engine into a lethal win condition that deals infinite damage. Meanwhile, Trostani, Selesnya's Voice watches the procession and floods your life total with massive amounts of lifegain every single time either creature enters the battlefield.