Must be played (as well as other "as the action is announced" action modifiers) before action modifiers that are not explicitly played "as the action is announced" (e.g., Conditioning).
101725
Serenading the Kami
Only usable as the action is announced.
The acting vampire gets +1 strength this action.
As above, but with +2 strength.
Rulings
Replace the action card (if any) before playing it.