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

Prerequisites

• Chulane, Teller of Tales on the battlefield
• Retreat to Coralhelm on the battlefield
• Nyxbloom Ancient on the battlefield
• Spelunking on the battlefield
• Simic Growth Chamber in hand

Steps

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 and tapping it, returning the creature from the battlefield to your hand
9. Repeat

Results

• Infinite card draw
• Near-infinite ETB
• Infinite draw triggers
• Near-infinite storm count
• Near-infinite landfall triggers
• Near-infinite LTB