Prerequisites
- Xu-Ifit, Osteoharmonist on the battlefield
- Intruder Alarm on the battlefield
- Umbral Collar Zealot on the battlefield
Steps
- Activate Xu-Ifit by tapping it, returning a creature card from your graveyard to the battlefield
- When the creature enters the battlefield, Intruder Alarm triggers, untapping all creatures
- Activate Umbral Collar Zealot by sacrificing the creature returned in step 1
- Repeat
Results
- Infinite LTB
- Infinite ETB
- Infinite sacrifice triggers
- Infinite death triggers
- Infinite mana creatures you control can produce
- Infinite untap of creatures
- Infinite surveil 1
Required Cards 3
Xu-Ifit, Osteoharmonist
Legendary Creature — Human Wizard
Intruder Alarm
Enchantment
Umbral Collar Zealot
Creature — Human Cleric