Emry, Lurker of the Loch, Displacer Kitten, Breaching Hippocamp, and Lion's Eye Diamond

Prerequisites

• Emry, Lurker of the Loch on the battlefield
• Displacer Kitten on the battlefield
• Breaching Hippocamp on the battlefield
• Lion's Eye Diamond in the graveyard

Steps

1. Activate Emry by tapping it, targeting Lion's Eye Diamond
2. Cast Lion's Eye Diamond from your graveyard by paying
3. Displacer Kitten triggers, blinking Breaching Hippocamp
4. When Breaching Hippocamp enters, it triggers, untapping Emry
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