Skullbriar, the Walking Grave, Triad of Fates, and Intruder Alarm

Prerequisites

• Skullbriar, the Walking Grave on the battlefield
• Triad of Fates on the battlefield
• Intruder Alarm on the battlefield
• Triad of Fates does not have summoning sickness
• Skullbriar has at least one fate counter on it
• You control a creature that can tap to produce at least

Steps

1. Activate a mana-producing creature by tapping it, adding at least
2. Actviate Triad of Fates' second ability by paying and tapping it, blinking Skullbriar
3. When Skullbriar enters the battlefield, Intruder Alarm triggers, untapping all creatures
4. Repeat
5. If creatures you control can produce at least , this combo will net infinite mana

Results

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