Emry, Lurker of the Loch, Mirran Spy, and Mishra's Bauble

Prerequisites

• Emry, Lurker of the Loch on the battlefield
• Mirran Spy on the battlefield
• Mishra's Bauble on the battlefield
• Emry does not have summoning sickness

Steps

1. Activate Mishra's Bauble by tapping and sacrificing it, looking at the top card of a player's library and drawing a card at the beginning of the next turn's upkeep
2. Activate Emry by tapping it, targeting Mishra's Bauble
3. Cast Mishra's Bauble from your graveyard by paying
4. Mirran Spy triggers, untapping Emry
5. Repeat

Results

• Infinite card draw at the beginning of next upkeep step
• Infinite ETB
• Infinite LTB
• Infinite storm count