Mortuary + Goblin Bombardment + Bolas's Citadel + Tarpan

Mortuary

Goblin Bombardment

Bolas's Citadel

Tarpan

How it works

1. Activate Goblin Bombardment by sacrificing Tarpan.
2. When Tarpan dies, it and Mortuary triggers.
3. Resolve the Mortuary trigger, putting Tarpan from your graveyard onto the top of your library.
4. Resolve the Tarpan trigger, causing you to gain 1 life
5. Resolve the Goblin Bombardment ability.
6. Cast Tarpan from the top of your library by paying 1 life due to Bolas's Citadel.
7. Repeat.

This vicious loop lets you turn the top of your library into an endless engine of destruction, fueled entirely by life rather than mana. By using Goblin Bombardment to sacrifice Tarpan, you trigger Mortuary to neatly recycle the creature right back onto the top of your library. From there, Bolas's Citadel allows you to recast Tarpan instantly for just a single point of life, offsetting the cost and triggering its death ability to effortlessly loop your resources into infinite damage, lifegain, and storm count.