Blasting Station, Dualcaster Mage, and Black Sun's Twilight

Prerequisites

• Blasting Station on the battlefield
• Dualcaster Mage in hand
• Black Sun's Twilight in hand
• available

Steps

1. Cast Black Sun's Twilight by paying Holding priority, cast Dualcaster Mage by paying its mana cost
2. When Dualcaster Mage enters, it and Blasting Station trigger, with Dualcaster Mage targeting Black Sun's Twilight
3. Resolve the Blasting Station trigger, untapping it
4. Holding priority, activate Blasting Station by tapping it and sacrificing Dualcaster Mage
5. 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
6. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite damage
• Infinite magecraft triggers