Color Identity: B

Initial Card State
- All permanents on the battlefield.
Notable Prerequisites
- You control at least one additional creature.
- Thornbite Staff attached to Fain.
- Fain does not have summoning sickness.
Steps
- Activate Fain's first ability by tapping it and sacrificing a creature.
- The creature dies, triggering Rotlung Reanimator and Fain.
- Resolve the Rotlung Reanimator trigger, creating a 2/2 Zombie creature token.
- Resolve the Fain trigger, untapping it.
- Resolve the Fain ability from step 1, putting two +1/+1 counters on a creature you control.
- Repeat.
Results
- Infinite death triggers.
- Infinite ETB.
- Infinite LTB.
- Infinite sacrifice triggers.
- Infinite +1/+1 counters on creatures you control.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).