Emry, Lurker of the Loch, Chakram Retriever, and Urza's Bauble

Prerequisites

• Emry, Lurker of the Loch on the battlefield
• Chakram Retriever on the battlefield
• Urza's Bauble on the battlefield
• Emry does not have summoning sickness

Steps

1. Activate Urza'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 Urza's Bauble
3. Cast Urza's Bauble from your graveyard by paying
4. Chakram Retriever triggers, untapping Emry
5. Urza's Bauble resolves
6. Repeat

Results

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