The key card is present but its support is thin.
Prioritize useful support such as Flamebraider or Flaring Cinder.
Travelers doubles another Elemental’s triggered abilities. With Rimespeaker present, a qualifying spell can draw twice; a discounted spell still counts by mana value.
Your deck already enables the plan but is losing the early turns.
Take a castable early creature or efficient answer before a second expensive payoff.
Flamebraider mana is restricted. Skyswimmer has a qualifying mana value but is not an Elemental unless another effect makes it one.
The support is missing
Favor independently useful creatures and interaction if the narrow support does not arrive.