Emry, Lurker of the Loch, Mirran Spy, Lotus Petal, and Efficient Construction

Prerequisites

• Emry, Lurker of the Loch on the battlefield
• Mirran Spy on the battlefield
• Lotus Petal on the battlefield
• Efficient Construction on the battlefield
• Emry does not have summoning sickness

Steps

1. Activate Lotus Petal by tapping and sacrificing it, adding one mana of any color
2. Activate Emry by tapping it, targeting Lotus Petal
3. Cast Lotus Petal from your graveyard by paying
4. Mirran Spy and Efficient Construction triggers
5. Resolve the Mirran Spy trigger, untapping Emry
6. Resolve the Efficient Construction trigger, creating a 1/1 Thopter token
7. Repeat

Results

• Infinite colored mana
• Infinite creature tokens
• Infinite ETB
• Infinite LTB
• Infinite storm count