Ashnod's Altar + Dualcaster Mage + Persist

Prerequisites

• You have a nonlegendary creature card in your graveyard.

Steps

1. 1Cast Persist by paying its mana cost, targeting any applicable target.
2. 2Holding priority, cast Dualcaster Mage by paying its mana cost.
3. 3When Dualcaster Mage enters, it triggers, targeting Persist.
4. 4Holding priority, activate Ashnod's Altar by sacrificing Dualcaster Mage.
5. 5Resolve the Dualcaster Mage trigger, copying Persist, with the copy targeting Dualcaster Mage
6. 6Resolve the Persist copy, returning Dualcaster Mage from your graveyard to the battlefield.
7. 7Repeat from step 3.

Effects

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite magecraft triggers
• Infinite sacrifice triggers