Intruder Alarm, Maskwood Nexus, and Mishra, Eminent One

Prerequisites

• Intruder Alarm on the battlefield
• Maskwood Nexus on the battlefield
• Mishra, Eminent One on the battlefield
• Creatures you control can tap to produce at least

Steps

1. At the beginning of your combat phase, Mishra triggers, creating a token copy of Maskwood Nexus that is a 4/4 Construct with haste named Mishra's Warform
2. When Mishra's Warform enters the battlefield, Intruder Alarm triggers, untapping all creatures
3. Activate any number of mana-producing creatures you control by tapping them, adding at least
4. Activate Mishra's Warform by paying and tapping it, creating a 2/2 Shapeshifter creature token
5. When the Shapeshifter enters the battlefield, Intruder Alarm triggers, untapping all creatures
6. Repeat from step 3
7. If creatures you control can tap to produce at least , this combo nets infinite mana

Results

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