Mikaeus, the Unhallowed + Carrion Feeder + Gravelgill Axeshark

Prerequisites

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Steps

1. 1Activate Carrion Feeder by sacrificing Gravelgill Axeshark.
2. 2When Gravelgill Axeshark 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 Gravelgill Axeshark.
5. 5When Gravelgill Axeshark 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 creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers