Cast the creature in your hand by paying its mana cost.
Chulane triggers, causing you to draw a card and put Selesnya Sanctuary from your hand onto the battlefield untapped due to The Wandering Minstrel.
When Selesnya Sanctuary enters, it and Retreat to Coralhelm trigger.
Holding priority, activate Selesnya Sanctuary by tapping it, adding due to Nyxbloom Ancient.
Resolve the Selesnya Sanctuary 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 clever loop transforms Chulane, Teller of Tales into an engine for infinite card draw and landfall triggers by exploiting a self-returning bounce land. Whenever Chulane helps you drop Selesnya Sanctuary into play, The Wandering Minstrel ensures it enters untapped so you can immediately tap it for a massive mana windfall, thanks to Nyxbloom Ancient tripling your output. That mana then fuels Chulane's activated ability to bounce your cast creature right back to your hand, while Retreat to Coralhelm untaps your creatures to keep the chain flowing seamlessly.