be749649_o_Wiki__the_Mario_encyclopedia__Description
[Special] Luiginary Flame [Effects] Press B just as a fireball lands on a group of Luiginoids or A if on just Mario to bounce to the next group. If successful, Mario will volley the fireball with his hammer into the group of enemies. [BP] 14 [Type] - [Location] Dreamy Driftwood Shore [Description] 
The fire will bounce at a steady pace. Press the B Button to make it bigger! Mario will cover the spots where the Luiginoids aren't. Use the A Button here. Press the A Button once to make Mario hammer the flame at the foes!
Mario & Luigi: Dream Team - Super Mario Wiki, the Mario encyclopedia