Tocasia, Dig Site Mentor, Intruder Alarm, and Emmara, Soul of the Accord

Prerequisites

• Tocasia, Dig Site Mentor on the battlefield
• Intruder Alarm on the battlefield
• Emmara, Soul of the Accord on the battlefield
• Emmara does not have summoning sickness

Steps

1. Activate Emmara by tapping it
2. Emmara triggers, creating a 1/1 Soldier creature token
3. The Soldier enters the battlefield, triggering Intruder Alarm, untapping all creatures
4. Resolve the Emmara ability from step 1, causing you to surveil
5. Repeat

Results

• Infinite creature tokens
• Infinite ETB
• Infinite mana creatures you control can produce
• Infinite self-mill
• Infinite surveil
• Infinite untap of all creatures