Cast the creature in your hand by paying its mana cost.
Chulane triggers, causing you to draw a card and put Simic Growth Chamber from your hand onto the battlefield untapped due to The Wandering Minstrel.
When Simic Growth Chamber enters, it and Retreat to Coralhelm trigger.
Holding priority, activate Simic Growth Chamber by tapping it, adding due to Nyxbloom Ancient.
Resolve the Simic Growth Chamber trigger, returning it from your hand to the battlefield.
Resolve the Retreat to Coralhelm trigger, untapping Chulane.
Resolve the creature spell cast in step 1.
Activate Chulane by paying 3 and tapping it, returning the creature from the battlefield to your hand.
Repeat.
This elegant loop is anchored by Chulane, Teller of Tales, whose ability to bounce a creature back to your hand for three mana allows you to recast it repeatedly and churn through your entire deck. Every time you cast a creature, Chulane lets you drop a land from your hand—and thanks to The Wandering Minstrel, that land enters the battlefield completely untapped. When Simic Growth Chamber hits the board, its own bounce trigger pairs with Retreat to Coralhelm to untap Chulane while recycling the land back to your hand, creating an endless cycle of repeatable landfalls. Finally, the explosive mana-multiplying power of Nyxbloom Ancient ensures that tapping Simic Growth Chamber generates more than enough green and blue mana to fund Chulane's activation costs indefinitely.