Super Mario 3D World: Castle-A -- Brolder Blockade Is Back

Boss Brolder is back. The battle is largely the same as before, except that fiery lava balls appear from the lava and leave a fiery trail behind them, giving you something else to dodge. Throw a Brolder at the Boss Brolder three times to defeat it. Once you defeat it, a Green Star will appear. You'll need to clear Castle-B to progress.