Mortuary + Vivien, Monsters' Advocate + Chamber Sentry

Mortuary

Vivien, Monsters' Advocate

Chamber Sentry

How it works

1. Cast Chamber Sentry either from your hand or from the top of your library by paying 0.
2. Chamber Sentry enters the battlefield and dies as a state-based action due to having zero toughness.
3. Mortuary triggers, putting Chamber Sentry on top of your library from your graveyard.
4. Repeat.

This clever loop turns the zero-mana casting cost of Chamber Sentry into an endless engine of sacrifice and resurrection. Because you can cast Chamber Sentry for zero mana, it immediately hits the graveyard upon entering the battlefield with zero toughness, triggering Mortuary to seamlessly recycle it right back to the top of your library. From there, Vivien, Monsters' Advocate lets you effortlessly peek at the top card and cast the Sentry over and over again, generating infinite creature enters-the-battlefield triggers, leaves-the-battlefield triggers, and storm count.