Emry, Lurker of the Loch, Jeskai Ascendancy, Orcish Mechanics, and Astral Cornucopia

Prerequisites

• Emry, Lurker of the Loch on the battlefield
• Jeskai Ascendancy on the battlefield
• Orcish Mechanics on the battlefield
• Astral Cornucopia on the battlefield
• Emry and Orcish Mechanics do not have summoning sickness

Steps

1. Tap Orcish Mechanics, sacrificing Astral Cornucopia to deal 2 damage to each opponent
2. Tap Emry, targeting Astral Cornucopia
3. Cast Astral Cornucopia
4. Jeskai Ascendancy triggers, allowing you to loot
5. Jeskai Ascendancy triggers, untapping all creatures you control and giving them +1/+1 until end of turn
6. Repeat

Results

• Infinite damage
• Infinite looting
• Infinitely large creatures until end of turn
• Infinite storm count
• Infinite untap