Phyrexian Altar + Dualcaster Mage + Supernatural Stamina

Phyrexian Altar

Dualcaster Mage

Supernatural Stamina

How it works

1. Cast Supernatural Stamina by paying its mana cost.
2. Holding priority, cast Dualcaster Mage by paying its mana cost.
3. When Dualcaster Mage enters, it triggers, copying Supernatural Stamina, with the copy targeting Dualcaster Mage.
4. Resolve the copy of Supernatural Stamina.
5. Holding priority, activate Phyrexian Altar by sacrificing Dualcaster Mage.
6. When Dualcaster Mage dies, it triggers, returning it from your graveyard to the battlefield.
7. Repeat from step 3.

This clever loop begins by using Dualcaster Mage to copy Supernatural Stamina, ensuring the Mage is prepped with its own recursive safety net before it ever hits the graveyard. Once Supernatural Stamina is locked onto the Mage, you can freely feed that very same Dualcaster Mage to Phyrexian Altar to generate any color of mana. Because the Mage's death triggers the return effect granted by Supernatural Stamina, it effortlessly bounces right back to the battlefield to copy the spell all over again.