Zimone, Quandrix Prodigy | Retreat to Coralhelm | Archelos, Lagoon Mystic

(and one other card)

Gruul Turf in hand.
All other permanents on the battlefield (
Zimone without summoning sickness and
Archelos untapped).

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