Dualcaster Mage, and Another Round

Prerequisites

• Dualcaster Mage in hand
• Another Round in hand
• available

Steps

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

Results

• Infinite LTB
• Infinite ETB
• Infinite magecraft triggers
• Infinite blinking of creatures you control