Mortuary + Endless One + Grim Haruspex

Mortuary

Endless One

Grim Haruspex

How it works

1. Cast Endless One by paying 0.
2. Endless One enters and dies as a state-based action due to having 0 toughness, triggering Mortuary and Grim Haruspex.
3. Resolve the Mortuary trigger, putting Endless One from your graveyard onto the top of your library.
4. Resolve the Grim Haruspex trigger, causing you to draw a card, thus drawing Endless One from your library.
5. Repeat.

This clever loop relies on Endless One entering the battlefield with zero toughness for zero mana, immediately sacrificing itself to the state-based actions of the game and triggering a cascading engine. As the creature dies, Grim Haruspex catches the event to let you draw a card, while Mortuary quietly intercepts it on its way to the graveyard, seamlessly placing it back on top of your library just in time to be drawn. By repeating this cycle, you can endlessly replay the creature to churn through your entire library, rack up infinite death triggers, and fuel a massive storm count.