Oltec Matterweaver + Cavern Harpy + Jolene, the Plunder Queen

Oltec Matterweaver

Cavern Harpy

Jolene, the Plunder Queen

How it works

1. Cast Cavern Harpy by paying .
2. Oltec Matterweaver triggers, creating two token copies of any Treasure 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, adding .
5. Repeat.