Springheart Nantuko | Gruul Turf | Archelos, Lagoon Mystic (and one other card)

Cards

Gruul Turf in hand.
All other permanents on the battlefield (
Springheart Nantuko attached to
Oracle of Mul Daya and
Archelos untapped).

Play
Gruul Turf. When it enters untapped due to
Archelos,
Gruul Turf and
Springheart Nantuko trigger.
Holding priority, activate
Gruul Turf by tapping it, adding ({R} magic symbol) ({G} magic symbol) .
Resolve the
Gruul Turf trigger, returning it from the battlefield to your hand.
Resolve the
Springheart Nantuko trigger, causing you to pay ({1} magic symbol) ({G} magic symbol) to create a token copy of
Oracle of Mul Daya.
Because of the additional
Oracle of Mul Daya token, you can play an additional land this turn.
Repeat.

This combo has been estimated to be Exhibition (Bracket 1+).