Altar of Dementia + Dualcaster Mage + Second Sunrise

Prerequisites

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Steps

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

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite magecraft triggers
• Infinite mill
• Infinite recursion of creature cards in your graveyard
• Infinite self-mill