Twilight's Call, Intruder Alarm, Mnemonic Wall, Deathbloom Ritualist, and Altar of Dementia

Prerequisites

• Twilight's Call in hand
• Intruder Alarm on the battlefield
• Mnemonic Wall on the battlefield
• Deathbloom Ritualist on the battlefield
• Altar of Dementia on the battlefield
• Deathbloom Ritualist does not have summoning sickness
• You have at least three creature cards in your graveyard
• (at most) available

Steps

1. Activate Altar of Dementia by sacrificing Mnemonic Wall, causing target player to mill cards equal to Mnemonic Wall's power
2. Activate Deathbloom Ritualist by tapping it, adding at least
3. Cast Twilight's Call by paying , causing each player to return all creature cards from their graveyard to the battlefield
4. Mnemonic Wall and each creature enters the battlefield, triggering Intruder Alarm that many times and Mnemonic Wall once
5. Holding priority, activate Altar of Dementia by sacrificing another nontoken creature, causing target player to mill cards equal to the sacrificed creature's power
6. Resolve the Mnemonic Wall trigger, causing you to return Twilight's Call from your graveyard to your hand
7. Resolve the first Intruder Alarm trigger, untapping all creatures
8. Activate Deathbloom Ritualist by tapping it, adding at least one mana of any color
9. Repeat from step 7 for each remaining trigger
10. Activate Altar of Dementia by sacrificing another nontoken creature, causing target player to mill cards equal to the sacrificed creature's power
11. Repeat step 10 until you have at least six creature cards in your graveyard
12. Repeat

Results

• Infinite colored mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite magecraft triggers
• Infinite mana creatures you control can produce
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill
• Infinite storm count
• Infinite untap of all creatures