Carrion Feeder + Mikaeus, the Unhallowed + Persistent Constrictor

Prerequisites

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Steps

1. 1Activate Carrion Feeder by sacrificing Persistent Constrictor.
2. 2When Persistent Constrictor dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. 3Resolve the Carrion Feeder ability.
4. 4Activate Carrion Feeder by sacrificing Persistent Constrictor.
5. 5When Persistent Constrictor dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
6. 6Resolve the Carrion Feeder ability.
7. 7Repeat.

Effects

• Infinite +1/+1 counters on a creature
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers