Phyrexian Altar + Dualcaster Mage + Extract from Darkness

Prerequisites

• You have a creature card in your graveyard.

Steps

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

Effects

• Infinite colored mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite magecraft triggers
• Infinite mill
• Infinite self-mill