Ethereal Forager + Temur Sabertooth + Time Warp

Ethereal Forager

Temur Sabertooth

Time Warp

How it works

1. Declare Ethereal Forager as an attacker.
2. Ethereal Forager triggers, returning Time Warp 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 Time Warp by paying 3, causing you to take an extra turn after this one.
6. Cast Ethereal Forager by paying 3 and exiling Time Warp 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 loop creates an endless sequence of extra turns by feeding your graveyard resources directly back into your hand, fueled by Ethereal Forager's delve ability and its attack trigger to continually reclaim Time Warp. With Temur Sabertooth standing ready to bounce the Forager back to safety for a modest mana investment, you can recast both cards on the ensuing extra turn to rinse and repeat the process indefinitely. (While the steps mention a stray Chulane trigger that happens to draw you cards along the way, the true engine rests entirely in this relentless cycle of attacking, bouncing, and taking all the time in the world.)