Oltec Matterweaver, Cavern Harpy, and Bard, King of Dale

Prerequisites

• Oltec Matterweaver on the battlefield
• Cavern Harpy in hand
• Bard, King of Dale on the battlefield
• available

Steps

1. Cast Cavern Harpy by paying
2. Oltec Matterweaver triggers, creating two token copies of any Treasure or Gold token you control
3. When Cavern Harpy enters the battlefield, it triggers, returning itself from the battlefield to your hand
4. Activate two Treasures by tapping and sacrificing them, or two Golds by sacrificing them, adding
5. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite storm count