Dualcaster Mage, Breaking // Entering, and Phyrexian Altar

Prerequisites

• Dualcaster Mage in hand
• Breaking // Entering in hand
• Phyrexian Altar on the battlefield
• There is at least one creature card in a graveyard
• available

Steps

1. Cast Entering by paying , targeting any creature card in a graveyard
2. Holding priority, cast Dualcaster Mage by paying
3. When Dualcaster Mage enters the battlefield, it triggers, targeting Entering
4. Holding priority, activate Phyrexian Altar by sacrificing Dualcaster Mage, adding one mana of any color
5. Resolve the Dualcaster Mage ability, creating a copy of Entering, targeting Dualcaster Mage
6. Resolve the copy of Entering, returning Dualcaster Mage from your graveyard to the battlefield
7. Repeat from step 3
8. Optionally, you may cast both Breaking and Entering if you have an additional available to infinitely mill any number of players

Results

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