Ethereal Forager + Temur Sabertooth + Capture of Jingzhou

Ethereal Forager

Temur Sabertooth

Capture of Jingzhou

How it works

1. Declare Ethereal Forager as an attacker.
2. Ethereal Forager triggers, returning Capture of Jingzhou from exile to your hand.
3. Activate Termur Sabertooth by paying 1, returning Ethereal Forager to your hand from the battlefield.
4. Move to your postcombat main phase.
5. Cast Capture of Jingzhou by paying 3, causing you to take an extra turn after this one.
6. Cast Ethereal Forager by paying 3 and exiling Capture of Jingzhou from your graveyard.
7. Chulane triggers, causing you to draw a card and allowing you to put a land from your hand onto the battlefield.
8. Repeat each turn.

This infinite turn engine relies on recycling a single extra turn spell through the graveyard directly back to your hand. By leveraging Ethereal Forager's attack trigger, you can retrieve Capture of Jingzhou after exiling it to help pay for the creature's delve cost. Temur Sabertooth then safely bounces Ethereal Forager back to your hand for reuse, allowing you to recast both cards each cycle to take infinite turns. *(Note: The steps also mention Chulane helping you draw cards and accelerate lands along the way!)*