Encroaching Mycosynth + Dualcaster Mage + Wake the Past + Altar of Dementia

Prerequisites

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Steps

1. 1Cast Wake the Past by paying .
2. 2In response, cast Dualcaster Mage by paying .
3. 3Dualcaster Mage enters the battlefield, copying Wake the Past.
4. 4Activate Altar of Dementia by sacrificing Dualcaster Mage, causing any player to mill two cards.
5. 5Resolve a copy of Wake the Past, returning all nonland permanent cards from your graveyard to the battlefield and giving them haste.
6. 6Repeat from step 3.

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite magecraft triggers
• Infinite mill
• Infinite self-mill
• Put all nonland permanents in your graveyard and library onto the battlefield and give them haste