Umbral Collar Zealot + Moment of Reckoning + Dualcaster Mage

Prerequisites

• You have a creature card in your graveyard.

Steps

1. 1Cast Moment of Reckoning by paying its mana cost
2. 2Holding priority, cast Dualcaster Mage by paying its mana cost.
3. 3When Dualcaster Mage enters, it triggers, targeting Moment of Reckoning.
4. 4Holding priority, activate Umbral Collar Zealot by sacrificing Dualcaster Mage.
5. 5Resolve the Dualcaster Mage trigger, copying Moment of Reckoning
6. 6Resolve the Moment of Reckoning copy, returning Dualcaster Mage from your graveyard to the battlefield.
7. 7Repeat from step 3.

Effects

• Destroy any number of nonland permanents
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite magecraft triggers
• Infinite recursion of creature cards in your graveyard
• Infinite surveil