Infinite creature LTBInfinite creature ETBInfinite creature sacrifice triggersInfinite death triggersInfinite mana creatures you control can produceInfinite untap of creaturesInfinite +1/+1 counters on a creature
How it works
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 Carrion Feeder by sacrificing the creature returned in step 1.
Repeat.
This clever loop turns Xu-Ifit, Osteoharmonist into a relentless engine for resurrection by leaning entirely on Intruder Alarm to continuously clear away summoning sickness and reset its tap ability. Every time a fallen ally returns to the battlefield, Intruder Alarm triggers to untap all creatures, ensuring Xu-Ifit is ready to tap again right away. Meanwhile, Carrion Feeder acts as the necessary exit strategy, letting you instantly sacrifice that newly returned creature to feed its own growth and clear the way for the next cycle.