Chulane, Teller of Tales + Retreat to Coralhelm + Nyxbloom Ancient + Tiller Engine + Selesnya Sanctuary

Chulane, Teller of Tales

Retreat to Coralhelm

Nyxbloom Ancient

Tiller Engine

Selesnya Sanctuary

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 Selesnya Sanctuary from your hand onto the battlefield.
3. When Selesnya Sanctuary enters, it, Tiller Engine and Retreat to Coralhelm trigger.
4. Resolve the Tiller Engine trigger, untapping Selesnya Sanctuary.
5. Holding priority, activate Selesnya Sanctuary by tapping it, adding due to Nyxbloom Ancient.
6. Resolve the Selesnya Sanctuary trigger, returning it from your hand to the battlefield.
7. Resolve the Retreat to Coralhelm trigger, untapping Chulane.
8. Resolve the creature spell cast in step 1.
9. Activate Chulane by paying 3 and tapping it, returning the creature from the battlefield to your hand.
10. Repeat.

This clever engine loops Selesnya Sanctuary back and forth between your hand and the battlefield to generate massive amounts of mana and card advantage. Chulane, Teller of Tales acts as the commander of the loop by drawing you cards and dropping lands whenever you cast creatures, while Retreat to Coralhelm and Tiller Engine turn each land entry into a flurry of untap triggers to keep your permanents ready. To fuel the whole operation, Nyxbloom Ancient triples every drop of mana you squeeze out of Selesnya Sanctuary, ensuring you always have more than enough resources to bounce and recast your creatures indefinitely.