Dualcaster Mage, and Stolen Identity

Prerequisites

• Dualcaster Mage in hand
• Stolen Identity in hand
• You control at least one creature
• You have enough mana to cast Stolen Identity available

Steps

1. Cast Stolen Identity by paying its mana cost, targeting a creature you control
2. Holding priority, cast Dualcaster Mage by paying
3. When Dualcaster Mage enters the battlefield, it triggers, copying Stolen Identity, targeting Dualcaster Mage
4. Resolve the copy of Stolen Identity, creating a token copy of Dualcaster Mage
5. Repeat from step 3

Results

• Infinite ETB
• Infinite creature tokens
• Infinite magecraft triggers