Viscera Seer, Dualcaster Mage, and Victimize

Prerequisites

• Viscera Seer on the battlefield
• Dualcaster Mage in hand
• Victimize in hand
• available

Steps

1. Cast Victimize by paying its mana cost Holding priority, cast Dualcaster Mage by paying its mana cost
2. When Dualcaster Mage enters, it triggers, targeting Victimize
3. Holding priority, activate Viscera Seer by sacrificing Dualcaster Mage
4. Resolve the Dualcaster Mage trigger, copying Victimize Resolve the Victimize copy, sacrificing a creature and returning Dualcaster Mage and another creature from your graveyard to the battlefield
5. Repeat from step 3

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite magecraft triggers
• Infinite sacrifice triggers
• Infinite scry 1