Grenzo, Dungeon Warden + Ashnod's Altar + Wheel of Sun and Moon

Grenzo, Dungeon Warden

Ashnod's Altar

Wheel of Sun and Moon

How it works

1. Activate Ashnod's Altar by sacrificing the additional creature, adding CC.
2. The creature is put on the bottom of your library instead of in your graveyard due to Wheel of Sun and Moon.
3. Activate Grenzo by paying 2, putting the creature into your graveyard from the bottom of your library, and then putting it onto the battlefield.
4. Repeat.

This loop is a masterclass in recycling, fueled by Ashnod's Altar to convert your creatures into the raw mana needed to keep the engine humming. The secret to its infinite recursion lies with Wheel of Sun and Moon, which intercepts your sacrificed creatures and neatly tucks them onto the bottom of your library instead of letting them rest in the graveyard. From there, Grenzo, Dungeon Warden can easily use its ability to pull those very same creatures right back onto the battlefield, creating an endless loop of sacrifice and rebirth.