Remembrance + Mortuary + Memnite + Yahenni, Undying Partisan

Remembrance

Mortuary

Memnite

Yahenni, Undying Partisan

How it works

1. Activate Yahenni by sacrificing Memnite.
2. When Memnite dies, Mortuary and Remembrance trigger.
3. Resolve the Mortuary trigger, putting Memnite from your graveyard on top of your library.
4. Resolve the Remembrance trigger, searching your library for Memnite and putting it into your hand.
5. Resolve the Yahenni ability.
6. Cast Memnite by paying 0.
7. Repeat.

This clever loop turns the free-casting artifact creature Memnite into an endless engine of sacrifice and rebirth. With Mortuary ensuring that every creature sent to the graveyard instantly returns to the top of your library, Remembrance immediately plucks that same card back out of your deck and drops it right into your hand. Meanwhile, Yahenni, Undying Partisan serves as the willing executioner to send Memnite away again and again for zero mana, generating an endless cascade of triggers while growing ever larger.