Progenitor Mimic + Time Stretch + Greenwarden of Murasa

Progenitor Mimic

Time Stretch

Greenwarden of Murasa

How it works

1. Cast Time Stretch by paying 8, taking two extra turns after this one.
2. At the beginning of your next upkeep, Progenitor Mimic triggers, creating a token copy of Greenwarden of Murasa.
3. When the token Greenwarden of Murasa enters the battlefield, it triggers itself, returning Time Stretch from your graveyard to your hand.
4. Repeat.

This elegant loop relies on the compounding value of extra turns to continuously reset your board state. By casting Time Stretch, you secure the consecutive turns needed to let Progenitor Mimic do its work, spawning a fresh token copy of Greenwarden of Murasa during each of your upkeeps. Every time that token materializes, its enters-the-battlefield ability triggers to fish Time Stretch right back out of your graveyard and into your hand, ready to be cast again. Because Progenitor Mimic's upkeep trigger ensures a steady stream of new tokens without ever exhausting your resources, you lock down the game with an endless procession of turns.