Dualcaster Mage, and Three Steps Ahead

Prerequisites

• Dualcaster Mage in hand
• Three Steps Ahead in hand
• available

Steps

1. Cast Three Steps Ahead by paying plus an additional to select its second mode, targeting a creature you control
2. Holding priority, cast Dualcaster Mage by paying
3. When Dualcaster Mage enters the battlefield, it triggers, copying Three Steps Ahead, targeting Dualcaster Mage
4. Resolve the copy of Three Steps Ahead, creating a token copy of Dualcaster Mage
5. Repeat from step 3

Results

• Infinite ETB
• Infinite creature tokens
• Infinite draw triggers
• Infinite magecraft triggers
• Near-infinite card draw
• Near-infinite looting
• Near-infinite self-discard triggers