Resolve the Simic Growth Chamber trigger, returning it from the battlefield to your hand.
Resolve the Springheart Nantuko trigger, causing you to pay 1 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 ingenious loop turns a modest bounce land into an engine for an entire army, anchored by Wayward Swordtooth granting you the extra land drop needed to keep the cycle turning. As Simic Growth Chamber repeatedly enters the battlefield, Amulet of Vigor immediately steps in to untap it so you can float mana right before the land bounces itself back to your hand. Meanwhile, Springheart Nantuko watches the constant landfall action from its enchanted perch, letting you feed that generated mana into its bestow ability to churn out endless copies of Wayward Swordtooth.