Myrkul, Lord of Bones + Verdant Succession + Riftsweeper + Carrion Feeder

Prerequisites

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Steps

1. 1Activate Carrion Feeder by sacrificing Riftsweeper.
2. 2Riftsweeper dies, triggering Verdant Succession and Myrkul.
3. 3Resolve the Myrkul trigger, causing you to exile Riftsweeper and create a token copy of Riftsweeper that is an enchantment and loses all other card types.
4. 4The Riftsweeper token enters the battlefield, shuffling the nontoken Riftsweeper into your library from exile.
5. 5Resolve the Verdant Succession trigger from step 2, searching your library for Riftsweeper and putting it onto the battlefield.
6. 6Riftsweeper enters the battlefield, shuffling any exiled card into its owner's library.
7. 7Resolve the Carrion Feeder ability from step 1, putting a +1/+1 counter on it.
8. 8Repeat.

Effects

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