Mortuary + Chamber Sentry + High-Society Hunter

Mortuary

Chamber Sentry

High-Society Hunter

How it works

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

This clever loop turns the zero-cost casting of Chamber Sentry into an endless engine of recycling and card draw. Because Chamber Sentry enters with zero toughness when cast for free, it immediately heads to the graveyard, triggering Mortuary to place it right back on top of your library. Meanwhile, High-Society Hunter watches from the battlefield, turning that death into a triggered draw that plucks Chamber Sentry straight back into your hand to begin anew.