Dualcaster Mage, and Flicker

Prerequisites

• Dualcaster Mage in hand
• Flicker in hand
• available

Steps

1. Cast Flicker by paying its mana cost
2. Holding priority, cast Dualcaster Mage by paying its mana cost
3. When Dualcaster Mage enters, it triggers, copying Flicker, with the copy targeting Dualcaster Mage
4. Resolve the copy of Flicker, blinking Dualcaster Mage
5. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite magecraft triggers