The key card is present but its support is thin.
Prioritize useful support such as Ainok Wayfarer or Sultai Devotee.
Cast Auroral Procession during your turn with Skimmer present. Returning the card triggers a draw; on a later turn harmonize Whisper for another departure and draw.
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.
Skimmer triggers only once per turn and only during your turn. Moving several cards at once does not multiply its card reward.
The support is missing
Favor independently useful creatures and interaction if the narrow support does not arrive.