Tocasia, Dig Site Mentor, Intruder Alarm, and Warchanter Skald

Prerequisites

• Tocasia, Dig Site Mentor on the battlefield
• Intruder Alarm on the battlefield
• Warchanter Skald on the battlefield
• Warchanter Skald does not have summoning sickness
• Warchanter Skald has at least one Aura and/or Equipment attached

Steps

1. Activate Warchanter Skald by tapping it
2. Warchanter Skald triggers, creating a 2/1 Dwarf Berserker creature token
3. The Dwarf Berserker enters the battlefield, triggering Intruder Alarm, untapping all creatures
4. Resolve the Warchanter Skald 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