Emry, Lurker of the Loch, Jeskai Ascendancy, Makeshift Munitions, and Mana Vault

Prerequisites

• Emry, Lurker of the Loch on the battlefield
• Jeskai Ascendancy on the battlefield
• Makeshift Munitions on the battlefield
• Mana Vault on the battlefield
• Emry does not have summoning sickness

Steps

1. Activate Mana Vault by tapping it, adding
2. Activate Makeshift Munitions by paying and sacrificing Mana Vault, dealing 1 damage to any target
3. Activate Emry by tapping it, allowing you to cast Mana Vault from your graveyard this turn
4. Cast Mana Vault from your graveyard by paying
5. Jeskai Ascendancy's first and second abilities trigger
6. Resolve the first trigger, causing creatures you control to get +1/+1 until end of turn and untapping all creatures you control
7. Resolve the second trigger, allowing you to loot
8. Repeat

Results

• Infinite colorless mana
• Infinite damage
• Infinite draw triggers
• Infinite looting
• Infinitely large creatures until end of turn
• Infinite self-discard triggers
• Infinite storm count
• Infinite untap of creatures you control