Color Identity: U, B


Initial Card State
- All permanents on the battlefield.
Notable Prerequisites
- Animate Artifact attached to Cauldron of Souls.
- Cauldron of Souls does not have summoning sickness.
Steps
- Activate Carrion Feeder by sacrificing itself.
- When Carrion Feeder dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
- When Carrion Feeder enters the battlefield, Intruder Alarm triggers, untapping all creatures.
- Resolve the Carrion Feeder ability, doing nothing.
- Activate Cauldron of Souls by tapping it, giving the creature persist until end of turn.
- Activate Carrion Feeder by sacrificing itself.
- When Carrion Feeder dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
- When Carrion Feeder enters the battlefield, Intruder Alarm triggers, untapping all creatures.
- Resolve the Carrion Feeder ability, doing nothing.
- Repeat.
- If you control an additional nontoken, non-Human creature, you may instead sacrifice it to get infinite +1/+1 counters on Carrion Feeder.
Results
- Infinite +1/+1 counters on a creature.
- Infinite death triggers.
- Infinite ETB.
- Infinite LTB.
- Infinite mana creatures you control can produce.
- Infinite sacrifice triggers.
- Infinite untap of creatures.
- Infinite untap of creatures you control.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).