On a brutally-cold New Year’s Day, a troika of city leaders renewed their oaths of office in front of City Hall. Love it, like it, or grumble under your breath for another four years -- Bill de Blasio, Scott Stringer and Tish James are back in action as your mayor, Comptroller and Public Advocate.

But if you swept your eyes across City Hall’s frozen tundra yesterday, you also would have seen a new political player who is set to be coronated tomorrow in the much-warmer confines of the City Council chambers.

Barring a train wreck or an unforeseen scandal, Corey Johnson will become City Council speaker, replacing Melissa Mark-Viverito, who was term-limited out of office.

Wisely staying quiet for a two-week period after he locked up his support, Johnson broke his silence yesterday in an exclusive interview with NY1’s Courtney Gross. Judging from their conversation, it’s clear he’s going to have a lot more to say over the next four years.

Embracing congestion pricing and talking about exploring universal health care in the city, Corey Johnson is likely going to be making waves in a political sea that’s been dominated by the S.S. De Blasio for the last four years.

In his interview, Johnson is articulate and canny when talking about Council politics as well as the city’s many needs. Facing term limits in just four years, Johnson’s name already zooms close to the top of the list of likely mayoral contenders in 2021. De Blasio, Stringer, and James all better make some room in their ice rink; that troika is about to come a quartet.

Bob Hardt