Muldrotha, the Gravetide, Displacer Kitten, Grinding Station, and Cheering Fanatic

Prerequisites

• Muldrotha, the Gravetide on the battlefield
• Displacer Kitten on the battlefield
• Grinding Station on the battlefield
• Cheering Fanatic on the battlefield

Steps

1. Declare Cheering Fanatic as an attacker
2. When it triggers, choose to name the chosen artifact
3. Cast the artifact from your graveyard using Muldrotha's ability by paying due to Cheering Fanatic
4. Displacer Kitten triggers, blinking Muldrotha, allowing you to use its ability again this turn
5. Resolve the artifact spell
6. When the artifact enters, Grinding Station triggers, untapping Grinding Station
7. Activate Grinding Station by tapping it and sacrificing the artifact, causing a player to mill three cards Repeat from step 2

Results

• Infinite artifact ETB
• Infinite artifact LTB
• Infinite artifact sacrifice triggers
• Infinite creature ETB
• Infinite creature LTB
• Infinite mill
• Infinite self-mill
• Infinite storm count