Prerequisites
- Shilgengar, Sire of Famine on the battlefield
- Dualcaster Mage in hand
- Black Sun's Twilight in hand
- available 
Steps
- Cast Black Sun's Twilight by paying Holding priority, cast Dualcaster Mage by paying its mana cost 
- When Dualcaster Mage enters, it triggers, targeting Black Sun's Twilight
- Holding priority, activate Shilgengar by sacrificing Dualcaster Mage
- Resolve the Dualcaster Mage trigger, copying Black Sun's Twilight Resolve the Black Sun's Twilight copy, returning Dualcaster Mage from your graveyard to the battlefield
- Repeat from step 3
Results
- Infinite LTB
- Infinite ETB
- Infinite sacrifice triggers
- Infinite death triggers
- Infinite magecraft triggers
- Infinite Blood tokens
Required Cards 3
 - Shilgengar, Sire of Famine- Legendary Creature — Elder Demon 
 - Dualcaster Mage- Creature — Human Wizard 
 - Black Sun's Twilight- Instant 
 
 
 
