Trench Behemoth + Fastbond + Kabira Crossroads

Trench Behemoth

Fastbond

Kabira Crossroads

How it works

1. Activate Trench Behemoth by returning Kabira Crossroads from the battlefield to your hand, untapping it.
2. Play Kabira Crossroads, triggering it and Fastbond.
3. Resolve the Kabira Crossroads trigger, causing you to gain 2 life.
4. Resolve the Fastbond trigger, dealing 1 damage to you.
5. Repeat.

This Vintage-legal loop transforms a single land into a self-sustaining engine by utilizing Fastbond to bypass normal land-drop restrictions, letting you replay Kabira Crossroads endlessly. Each iteration relies on Trench Behemoth's ability to bounce that very land back to your hand as a cost to untap itself, while also generating a net positive of 1 life since Kabira Crossroads triggers a gain of 2 life against the 1 damage dealt by Fastbond. By constantly recycling the same land through this sequence, you generate infinite landfall triggers, infinite lifegain, and infinite lifegain triggers without ever running out of resources.