Intruder Alarm, Warchanter Skald, and Fatestitcher

Prerequisites

• Intruder Alarm on the battlefield
• Warchanter Skald on the battlefield
• Fatestitcher on the battlefield
• Fatestitcher and Warchanter Skald do not have summoning sickness
• Warchanter Skald has at least one Aura and/or Equipment attached

Steps

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

Results

• Infinite creature tokens
• Infinite ETB
• Infinite mana creatures you control can produce
• Infinite untap of all creatures