Patron of the Moon + Wonderscape Sage + Retreat to Coralhelm + Stone-Seeder Hierophant

Patron of the Moon

Wonderscape Sage

Retreat to Coralhelm

Stone-Seeder Hierophant

How it works

1. Activate the mana-producing land by tapping it, adding at least 1.
2. Activate Wonderscape Sage by tapping it and returning the mana-producing land from the battlefield to your hand, causing you to draw a card and discard a card if the land didn't have a nonbasic land type.
3. Activate Patron of the Moon by paying 1, putting the mana-producing land from your hand onto the battlefield.
4. When the land enters the battlefield, Stone-Seeder Hierophant and Retreat to Coralhelm trigger.
5. Resolve the Retreat to Coralhelm trigger, untapping Wonderscape Sage.
6. Resolve the Stone-Seeder Hierophant trigger, untapping it.
7. Activate Stone-Seeder Hierophant by tapping it, untapping the mana-producing land.
8. Repeat.