The key card is present but its support is thin.
Prioritize useful support such as Black Mage's Rod or Mysidian Elder.
Play Rod or Elder before the removal sequence. A later Suplex can clear a blocker while the established Wizard and Black Waltz deal additional damage.
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.
Rod is black, so this support belongs here rather than automatically in blue-red. The new Rod’s Hero cannot reward the cast that created it.
The support is missing
Favor independently useful creatures and interaction if the narrow support does not arrive.