Infuse with Vitality, Phyrexian Altar, and Dualcaster Mage

Prerequisites

• Infuse with Vitality in hand
• Phyrexian Altar on the battlefield
• Dualcaster Mage in hand
• available

Steps

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

Results

• Infinite LTB
• Infinite ETB
• Infinite colored mana
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite lifegain triggers
• Infinite lifegain
• Infinite magecraft triggers