Dualcaster Mage, and Twinflame

Prerequisites

• Dualcaster Mage in hand
• Twinflame in hand
• At least one creature on the battlefield
• available

Steps

1. Cast Twinflame by paying
2. Holding priority, cast Dualcaster Mage by paying
3. Dualcaster Mage enters the battlefield, copying Twinflame
4. Resolve the Twinflame copy, creating a token copy of Dualcaster Mage
5. Repeat from step 3

Results

• Infinite creature tokens with haste
• Infinite ETB
• Infinite magecraft triggers