Tarmogoyf Nest, Intruder Alarm, and Wrenn and Realmbreaker

Prerequisites

• Tarmogoyf Nest on the battlefield
• Intruder Alarm on the battlefield
• Wrenn and Realmbreaker on the battlefield
• Creatures you control can tap to produce at least

Steps

1. Activate Wrenn and Realmbreaker's first loyalty ability by putting a loyalty counter on it, causing the land with Tarmogoyf Nest attached to become a creature until end of turn
2. Activate any number of creatures you control by tapping them, adding at least
3. Activate the land with Tarmogoyf Nest attached by paying and tapping it, creating a Tarmogoyf creature token
4. When the Tarmogoyf enters the battlefield, Intruder Alarm triggers, untapping all creatures
5. Repeat from step 2

Results

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