Extravagant Replication + Greenwarden of Murasa + Notorious Throng

Extravagant Replication

Greenwarden of Murasa

Notorious Throng

How it works

1. Deal combat damage to an opponent using a Rogue
2. Cast Notorious Throng for its prowl cost by paying 5, causing you to take an extra turn after this one.
3. Move to your next turn.
4. At the beginning of your upkeep, Extravagant Replication triggers, creating a token copy of Greenwarden of Murasa.
5. When the Greenwarden of Murasa token enters the battlefield, it triggers, returning Notorious Throng from your graveyard to your hand.
6. Repeat.

This clever loop relies on the upkeep-triggering power of Extravagant Replication to endlessly clone Greenwarden of Murasa, whose entrance trigger conveniently fishes Notorious Throng right back out of your graveyard. Once you've paid the prowl cost to cast Notorious Throng—which you can easily set up by dealing combat damage with a Rogue—you secure an extra turn to untap and let Extravagant Replication do its work all over again. Every iteration recycles the very same extra-turn spell while continuously growing your board with token copies of Greenwarden of Murasa, sealing a relentless chain of infinite turns.