Molderhulk + Cloudstone Curio + Dual Nature + Borborygmos Enraged

Molderhulk

Cloudstone Curio

Dual Nature

Borborygmos Enraged

How it works

1. Activate a Swamp and Forest by tapping them, adding .
2. Cast Molderhulk by paying .
3. When Molderhulk enters the battlefield, it, Dual Nature's first ability and Cloudstone Curio trigger.
4. Resolve the Cloudstone Curio trigger, choosing to return nothing to your hand.
5. Resolve the Dual Nature trigger, creating a token copy of Molderhulk.
6. When the Molderhulk token enters the battlefield, it and Cloudstone Curio trigger.
7. Resolve the Cloudstone Curio trigger, returning the nontoken Molderhulk from the battlefield to your hand.
8. When the nontoken Molderhulk leaves the battlefield, Dual Nature's second ability triggers, exiling the token Molderhulk.
9. Resolve the token Molderhulk's trigger from step 6, returning a Swamp from your graveyard to the battlefield.
10. When the Swamp enters the battlefield, Cloudstone Curio triggers, returning another Swamp from the battlefield to your hand.
11. Resolve the nontoken Molderhulk's trigger from step 4, returning a Forest from your graveyard to the battlefield.
12. When the Forest enters the battlefield, Cloudstone Curio triggers, returning another Forest from the battlefield to your hand.
13. Activate Borborygmos Enraged twice by discarding the Swamp and Forest, dealing 6 damage to any target.
14. Repeat.

This fascinating loop transforms Molderhulk's graveyard recursion into a self-sustaining engine by exploiting the interaction between Dual Nature and Cloudstone Curio. As the original Molderhulk and its token copy endlessly bounce each other off the battlefield, Dual Nature's leaves-the-battlefield trigger neatly cleans up the token copy so you can recast the main creature for cheap. Meanwhile, the constant influx of land entries triggers Cloudstone Curio to bounce your lands back to hand, fueling Borborygmos Enraged's activated ability to hurl endless chunks of 3 damage directly at your opponents.