The key card is present but its support is thin.
Prioritize useful support such as Acrobatic Cheerleader or Glimmer Seeker.
Attach Baseball Bat to a survival creature to tap a blocker when it attacks, or cast Coordinated Clobbering before the second main phase to tap an untapped survivor while removing a threat.
Your deck enables the plan but is losing the early turns.
Take a castable early creature or efficient answer before another expensive payoff.
Survival checks tapped status at the second main phase and again on resolution. After a tapped Cautious Survivor's trigger exists, destroying it uses last tapped status and does not stop its life gain.
The support is missing
Favor independently useful creatures and interaction if the narrow support does not arrive.