Oltec Matterweaver + Whitemane Lion + Elspeth, Storm Slayer

Oltec Matterweaver

Whitemane Lion

Elspeth, Storm Slayer

How it works

1. Cast Whitemane Lion by paying 1.
2. Oltec Matterweaver triggers, creating two token copies of any Treasure or Gold token you control.
3. When Whitemane Lion 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 1.
5. Repeat.