Emry, Lurker of the Loch, Displacer Kitten, Lion's Eye Diamond, and Concordant Crossroads

Prerequisites

• Emry, Lurker of the Loch on the battlefield
• Displacer Kitten on the battlefield
• Lion's Eye Diamond on the battlefield
• Concordant Crossroads on the battlefield

Steps

1. Activate Emry by tapping it, allowing you to cast Lion's Eye Diamond from your graveyard
2. Cast Lion's Eye Diamond by paying
3. Displacer Kitten triggers, blinking Emry
4. When Emry enters, it triggers, causing you to mill four cards
5. Activate Lion's Eye Diamond by discarding your hand and sacrificing it
6. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite colored mana
• Infinite storm count
• Infinite self-mill