Mortuary + Goblin Bombardment + Memnite + Bolas's Citadel

Mortuary

Goblin Bombardment

Memnite

Bolas's Citadel

How it works

1. Activate Goblin Bombardment by sacrificing Memnite
2. When Memnite dies, Mortuary triggers, putting Memnite from your graveyard onto the top of your library.
3. Resolve the Goblin Bombardment ability.
4. Cast Memnite from the top of your library by paying 0 life.
5. Repeat.

This clever loop turns the zero-cost artifact creature Memnite into an endless ammunition supply for Goblin Bombardment. Whenever you sacrifice Memnite to deal a point of damage, Mortuary quietly intercepts it on its way to the graveyard, placing it right back on top of your library. From there, Bolas's Citadel allows you to simply recast Memnite off the top for zero mana and zero life, letting you repeat the entire process to deal infinite damage and amass an infinite storm count.