Guan Yu, Sainted Warrior + Remembrance + Deathrender + Goblin Bombardment

Guan Yu, Sainted Warrior

Remembrance

Deathrender

Goblin Bombardment

How it works

1. Activate Goblin Bombardment by sacrificing Guan Yu.
2. When Guan Yu dies, it, Deathrender and Remembrance trigger.
3. Resolve the Guan Yu trigger, causing you to shuffle it into your library from your graveyard.
4. Resolve the Remembrance trigger, causing you to search your library for Guan Yu and put it into your hand.
5. Resolve the Deathrender trigger, putting Guan Yu from your hand onto the battlefield, and attaching Deathrender to it.
6. Resolve the Goblin Bombardment ability, dealing 1 damage to any target.
7. Repeat.

This loop transforms the loyal Guan Yu, Sainted Warrior into an endless engine of destruction by turning Goblin Bombardment's sacrificial outlet into a closed-loop resurrection cycle. Whenever Guan Yu hits the graveyard, Remembrance steps in to pluck a fresh copy straight from your library and place it right back into your hand, bypassing the shuffle effect from Guan Yu's own static death trigger. From there, Deathrender catches the dying warrior to instantly cheat it back onto the battlefield while reattaching itself to the general, ready to repeat the carnage all over again.