Dualcaster Mage, Brigid's Command, and Conspiracy

Prerequisites

• Dualcaster Mage in hand
• Brigid's Command in hand
• Conspiracy on the battlefield
• available

Steps

1. Cast Brigid's Command 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 Brigid's Command, targeting Dualcaster Mage
4. Resolve the copy of Brigid's Command, creating a token copy of Dualcaster Mage
5. Repeat from step 3

Results

• Infinite creature ETB
• Infinite creature tokens
• Infinite creature tokens that are infinitely large
• Infinite magecraft triggers
• Infinitely large creatures you control until end of turn