At the age of 80, she's 'riding a/the wave of' renewed interest in her work. [=she's experiencing a time when many people are interested in her work again]
The traffic cop 'waved' cars 'through'. [=waved in a way that told drivers to continue driving through a particular area]
The new school has triggered a 'wave' of optimism [=has made many people feel optimistic] about the public school system.
(..) the last drop of my blood. I will not abandon these walls. The spell has lifted. - Death has favored you. - Death favors no man. We must ride, like thundering waves under battle flag of my father. You must rest. We have rested long enough. Frost to fire, fire to frost. Iron will melt. (..)2012 Snow White and the Huntsman