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

Chulane, Teller of Tales

Retreat to Coralhelm

Nyxbloom Ancient

Simic Growth Chamber

Horizon Explorer

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 Horizon Explorer.
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 clever loop relies on Chulane, Teller of Tales to fuel your hand while constantly recycling lands with the help of Horizon Explorer, which ensures your permanents enter untapped. As Simic Growth Chamber repeatedly enters the battlefield, it triggers both its own bounce ability and Retreat to Coralhelm, allowing you to tap and untap your mana sources while filtering your options. The true engine that makes this mana-positive is Nyxbloom Ancient, which triples the output of every tap to easily cover the costs needed to bounce and recast your creatures over and over.