Dualcaster Mage, and Irenicus's Vile Duplication

Prerequisites

• Dualcaster Mage in hand
• Irenicus's Vile Duplication in hand
• You control at least one creature
• available

Steps

1. Cast Irenicus's Vile Duplication by paying , targeting any creature you control
2. Holding priority, cast Dualcaster Mage by paying
3. Dualcaster Mage enters the battlefield, creating a copy of Irenicus's Vile Duplication, targeting Dualcaster Mage
4. Resolve the copy of Irenicus's Vile Duplication, creating a token copy of Dualcaster Mage
5. The Dualcaster Mage token enters the battlefield, creating a copy of Irenicus's Vile Duplication, targeting Dualcaster Mage
6. Repeat from step 4

Results

• Infinite creature tokens
• Infinite ETB
• Infinite magecraft triggers