Rhys the Redeemed, and Intruder Alarm

Prerequisites

• Rhys the Redeemed on the battlefield
• Intruder Alarm on the battlefield
• Rhys does not have summoning sickness
• Creatures you control can tap to produce at least

Steps

1. Activate any number of mana producing creatures you control by tapping them, adding at least
2. Activate Rhys' first ability by paying and tapping it, creating a 1/1 Elf Warrior creature token
3. The Elf Warrior enters the battlefield, triggering Intruder Alarm, untapping all creatures
4. Repeat

Results

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