Exhume + Phyrexian Altar + Dualcaster Mage

Prerequisites

• You have a creature card in your graveyard.

Steps

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

Effects

• Each opponent returns all creature cards from their graveyard to the battlefield
• Infinite colored mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite magecraft triggers