Chulane, Teller of Tales + Retreat to Coralhelm + Nyxbloom Ancient + Simic Growth Chamber + Spelunking

Chulane, Teller of Tales

Retreat to Coralhelm

Nyxbloom Ancient

Simic Growth Chamber

Spelunking

How it works

1. Cast the creature in your hand by paying its mana cost.
2. Chulane triggers, causing you to draw a card and put Simic Growth Chamber from your hand onto the battlefield untapped due to Spelunking.
3. When Simic Growth Chamber enters, it and Retreat to Coralhelm trigger.
4. Holding priority, activate Simic Growth Chamber by tapping it, adding due to Nyxbloom Ancient.
5. Resolve the Simic Growth Chamber trigger, returning it from your hand to the battlefield.
6. Resolve the Retreat to Coralhelm trigger, untapping Chulane.
7. Resolve the creature spell cast in step 1.
8. Activate Chulane by paying 3 and tapping it, returning the creature from the battlefield to your hand.
9. Repeat.

This loop is a masterclass in turning a simple bounce-land into an unstoppable engine, anchored by Chulane, Teller of Tales to keep churning through your deck every time a creature enters. To make the math work, Nyxbloom Ancient triples the output of your lands, ensuring that tapping Simic Growth Chamber generates an overwhelming surge of mana—especially since Spelunking overrides the land's natural drawbacks to let it enter the battlefield completely untapped. Each time that happens, Retreat to Coralhelm triggers to untap Chulane, allowing you to use Chulane's activated ability to bounce your creature back to your hand so you can cast it all over again.