Springheart Nantuko | Simic Growth Chamber | Wayward Swordtooth (and one other card)

Cards

Simic Growth Chamber in hand.
All other permanents on the battlefield (
Springheart Nantuko attached to
Wayward Swordtooth and
Archelos untapped).

Play
Simic Growth Chamber. When it enters untapped due to
Archelos,
Simic Growth Chamber and
Springheart Nantuko trigger.
Holding priority, activate
Simic Growth Chamber by tapping it, adding ({G} magic symbol) ({U} magic symbol) .
Resolve the
Simic Growth Chamber 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
Wayward Swordtooth.
Because of the additional
Wayward Swordtooth token, you can play an additional land this turn.
Repeat.

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