Mortuary + Experimental Frenzy + Cathodion + Goblin Bombardment

Mortuary

Experimental Frenzy

Cathodion

Goblin Bombardment

How it works

1. Activate Goblin Bombardment by sacrificing Cathodion.
2. When Cathodion dies, it and Mortuary trigger.
3. Resolve the Cathodion trigger, adding CCC.
4. Resolve the Mortuary trigger, putting Cathodion on top of your library from your graveyard.
5. Resolve the Goblin Bombardment ability, dealing 1 damage to any target.
6. Cast Cathodion from the top of your library by paying 3.
7. Repeat.

This ingenious loop turns Cathodion into an endlessly recurring missile by leveraging the clever interaction between death triggers and library manipulation. When you sacrifice Cathodion to Goblin Bombardment, its own dying trigger generates the exact three mana needed to recast it, while Mortuary instantly catches it on its way to the graveyard and places it right back on top of your library. From there, Experimental Frenzy lifts the veil, allowing you to cast the metallic automaton directly from the top of your library to repeat the cycle infinitely.