Prowling Geistcatcher + Karmic Guide + Goblin Bombardment

Prowling Geistcatcher

Karmic Guide

Goblin Bombardment

How it works

1. Activate Goblin Bombardment by sacrificing Karmic Guide.
2. When Karmic Guide dies, Prowling Geistcatcher's first ability triggers, exiling Karmic Guide from your graveyard.
3. Activate Goblin Bombardment by sacrificing Prowling Geistcatcher.
4. When Prowling Geistcatcher dies, its second ability triggers, returning Karmic Guide from exile to the battlefield.
5. When Karmic Guide enters the battlefield, it triggers, returning Prowling Geistcatcher from your graveyard to the battlefield.
6. Resolve the Goblin Bombardment abilities from step 1 and step 3, dealing 2 damage to any target.
7. Repeat.

This clever loop creates an engine of endless sacrifice by utilizing Prowling Geistcatcher to intercept your creatures in the graveyard and safely stash them away. When you feed Karmic Guide to Goblin Bombardment, the Geistcatcher exiles the angel instead of letting her rest, and sacrificing the Geistcatcher in turn causes it to leave the battlefield and trigger its return effect. That brings back Karmic Guide, whose own entry trigger immediately rescues Prowling Geistcatcher from the graveyard right back to the battlefield, resetting the loop. Each iteration lets Goblin Bombardment ping away at any target for infinite damage while churning out endless deaths and triggers.