Emry, Lurker of the Loch, Urza, Lord High Artificer, Mirran Spy, Aether Spellbomb, and Glaring Fleshraker

Prerequisites

• Emry, Lurker of the Loch on the battlefield
• Urza, Lord High Artificer on the battlefield
• Mirran Spy on the battlefield
• Aether Spellbomb in hand or in the graveyard
• Glaring Fleshraker on the battlefield
• available

Steps

1. If Aether Spellbomb is in your graveyard, activate Emry by tapping it, targeting Aether Spellbomb
2. Cast Aether Spellbomb either from your hand or from your graveyard by paying Mirran Spy and Glaring Fleshraker's first ability trigger
3. Resolve the Mirran Spy trigger, untapping Emry
4. Resolve the Glaring Fleshraker trigger, creating a 0/1 Eldrazi Spawn creature token
5. When the Eldrazi Spawn enters, Glaring Fleshraker's second ability triggers, dealing 1 damage to each opponent
6. Activate the Eldrazi Spawn by sacrificing it, adding
7. Activate Urza's first ability by tapping Aether Spellbomb, adding
8. Activate Aether Spellbomb's second ability by paying and sacrificing it, causing you to draw a card
9. Repeat

Results

• Near-infinite damage
• Infinite card draw
• Near-infinite ETB
• Infinite draw triggers
• Near-infinite storm count
• Near-infinite LTB
• Near-infinite death triggers
• Near-infinite sacrifice triggers
• Return any number of creatures to their owners' hands