Zimone, Quandrix Prodigy | Retreat to Coralhelm | Stone-Seeder Hierophant

(and one other card)

Gruul Turf in hand.
All other permanents on the battlefield (
Zimone and
Stone-Seeder Hierophant without summoning sickness).

Activate
Zimone's first ability by paying ({1} magic symbol) and tapping it, putting
Gruul Turf from your hand onto the battlefield.
When
Gruul Turf enters the battlefield, it,
Retreat to Coralhelm and
Stone-Seeder Hierophant trigger.
Resolve the
Stone-Seeder Hierophant trigger, untapping it.
Holding priority, activate
Stone-Seeder Hierophant by tapping it, untapping
Gruul Turf.
Activate
Gruul Turf by tapping it, adding ({R} magic symbol) ({G} magic symbol) .
Resolve the
Gruul Turf trigger from step 2, returning it from the battlefield to your hand.
Resolve the
Retreat to Coralhelm trigger, untapping
Zimone.
Repeat.

You can untap any land using
Stone-Seeder Hierophant's ability if you wish to gain other color(s) and/or type(s) of mana, or use other abilities once you have infinite mana.