Trench Behemoth + Fastbond + Bloodfell Caves

Trench Behemoth

Fastbond

Bloodfell Caves

How it works

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

This vintage-legal loop turns a humble cave into an engine of relentless momentum by leaning into the interaction between Fastbond and its life-gaining fuel. With Fastbond removing land-per-turn restrictions, you can repeatedly bounce and replay Bloodfell Caves, offsetting Fastbond's self-inflicted damage through the cave's own lifegain trigger. Meanwhile, Trench Behemoth provides the mechanical escape valve, using its activated ability to scoop the land back to your hand at the cost of a tap—which it immediately shrugs off by untapping itself. The result is an infinite sequence of land drops that triggers any landfall abilities endlessly while keeping your life total stable.